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??一、动词时态
用来标明动作或状况发生时刻的各种动作方法变成动词的时态。英语中共有16种时态。时态的查询是历年高考抢手，每年都有2―4道单选题，短文改错中也常考时态。
语法项目表列了8项：
1）一般如今时
2）一般曩昔时
3）一般将来时
4）如今进行时
5）曩昔进行时
6）如今结束时
7）曩昔结束时
8）曩昔将来时。时态题首要查询者的8种时态的方法及用法，有时也靠查如今结束进行时和曩昔结束进行时等其他几种时态。
时态与每一品种型相联系，构成了英语动词的整个时态体系。现以write为例列表如下：
（一）一般如今时
一般如今常常以动词原形标明，但当主语是第三人称奇数时，使用动词的奇数第三人称方法。一般如今时首要有以下几种用法：
1、一般如今时标明如今常常发生或习气性的行为或状况，常与usually, always, every day, twice a week, seldom, sometimes等时刻状语连用。
he always sleeps with the windows open.他老是开着窗子睡觉。
2、一般如今时标明主语的性格、特征、才能等。
he works hard .他作业很尽力
does he like sports? 他喜爱运动吗？
3、一般如今时标明客观实际或广泛真理，也用在格言中。
the sun rises in the east.太阳从东方升起。
4、在时刻、条件、比照等状语从句中表将来的动作
在由when, if, after, before, as, as soon as, the minute, the next time, in case, though, till, until, unless, so long as, where, whatever, whenever等引导的状语从句中，常用一般如今时替代将来时，但应留心，主句的谓语动词有必要用一般将来时。
the volleyball match will be put off if it rains. 假定下雨，排球赛将推迟。
when they leave school, they will go to college.大学结业后，他们去上大学。
5、标明组织或方案好的将来动作，一般限于标明”运动”的动词，如：go, come, leave, start等。
the train starts at 10 o’ clock in the morning.火车在上午10点发车。
i’ll come to see you before you go.你走之前我来看你。动词原形变第三人称奇数的规则与发音规则同名词奇数变复数大致相同，请细心调查。1、大大都动词在词尾加“s”在清子音后发音为[s]，在浊子音及元音后发音为 [z]。如：①stop－stops [s] ; make－makes [s]②read－reads [z] ; play－plays [z]2、以子音字母加“y”结束的，要先将“y”变为“i”，然后在加“es”读[iz] 如：fly－flies [z]；carry－carries [z]study－studies [z]; worry－worries3、以“s, x, ch, sh”结束的，在词尾加“es”，发音为[iz] 如：teach－teaches [iz]; watch－watches [iz]4、以“o”结束的动词，加“es”，读[z] 如：go－goes [z] do－does [z下面几个动词变为奇数时，原词的元音有些的发音发生了较大的改变，请留心回想。 如： 1、do [du:]－does [dz]2、say [sei]－says [sez]以不发音字母“e”结束的开音节词，假定尾音是[s]，[z]时，加“s”后字母“e”发音， 与所加“s”一同读做[iz]。如：close－closes [iz]
be动词包括：am， is， are。第三人称奇数用 is；曩昔式为 was；复数用are，曩昔式为were.
除上述规则外，还应留心下面三点：
1. 动词 have ，遇到主语是第三人称奇数时，要用 has；动词 be 的第三人称奇数方法是is。
2. 富含动词第三人称奇数方法的语句变否定句时，要用 doesn’t + 动词原形，如：
he goes to school at six in the morning. (变否定句)→ he doesn’t go to school at six in the morning.
3. 对富含动词第三人称奇数方法的语句发问时，要用助动词 does，如：
she goes home at five every day. (对划线有些发问)→ when / what time does she go home every day?
（二）一般曩昔时
一般曩昔时标明曩昔某个时刻发生的动作或状况，常和标明曩昔的时刻连用，yesterday, last night, in 1990, two days ago等。也标明曩昔常常或重复发生的动作，常和often, always等标明频度的时刻状语连用。
1、标明曩昔某个特守时刻发生的动作或状况，常有清楚的时刻状语，如yesterday，last night, some years ago，in1890等，以及由when等引导的时刻状语从句。
tom didn’t come to class yesterday.汤姆昨日没来上课。
we went to dance last night.昨晚咱们去跳舞了。
2、标明曩昔某一段时刻内常常或重复发生的动作常与often，usually，seldom等标明频度的副词连用。
when i was in the countryside, i often called on my old friends there.我在村庄里，常常去造访那里的兄弟。
3、在条件、时刻状语从句中，常用一般曩昔时替代曩昔将来时。
they said they would let us know if they heard any news about him.他们说假定听到啥关于他的消息，就告诉咱们。
4、标明虚拟口气
这一用法只适用于某些特定的句型，标明如今或将来的非真实、片面貌的或期望。
if only i had a better memory.要是我的回想力好一点就好了。
if it rained tomorrow, the match would be put off.要是明日下雨，竞赛就会延期举办。
（三）一般将来时
1、一般将来时标明将来某个时刻要发生的动作或存在的状况，常与标明将来的时刻状语连用，如tomorrow, in the future, next year等。一般将来时由“助动词will/shall+动词原形”构成。
he will come to see you the day after tomorrow.后天他要来看你。
we won’t be free this afternoon.今日下午咱们没空。
2、一般将来时的其他表达法
（1）“be going to+动词原形”表将来
① 这种规划标明方案、方案、抉择要做的事或必定要发生的事。
they are going to meet outside the school gate.他们方案在校门口碰头。
② 还可标明说话人根据已有的实际或痕迹，认为某事即将发生、必定会发生或可以呈现的情况。
i think i’m going to die. 我想我要死了。(如今生命垂危)
look at the cloud. it’s going to rain.瞧那乌云，天要下雨了。(乌云布满，使我断定天要下雨)
③这种规划标明“必定、猜测，注定会”。在这种情况下可以和“think, hope, want, believe, like”等标明静态的动词连用。
he failed in the exam; he knew he was going to when he looked at the test paper.他没考及格，他一看试卷就晓得考不及格。
the voters aren’t going to like him.选民们不会喜爱他的。
“be about to+动词原形”表将来
（2）“be about to+动词原形”标明方案或据组织即将发生的动作。它不与标明时刻的副词或其他时刻状语连用。
the english evening is about to start.英语晚会即将初步。
（3）“be to+动词原形”标明约好的、方案中的或按责任、责任需求要发生的动作，这种动作一般是人的意志所能控制的，或用于寻求定见。
there’s to be a slide show this afternoon.今日下午要放幻灯。
you are to hand in your papers by 10 o’clock.到10点你得交上试卷。
（4）用如今进行时来标明将来
如今进行时标明按方案、组织即将发生的动作，这一规划常用于标明方位转移的动词，如come , go , leave, start ,move, arrive等，还有join, play, eat, work, return, take, wear, stay, sleep, meet等。常与标明将来的时刻状语连用。
i’m leaving for tibet on sunday.星期天我要去西藏。
when are you going back to your factory? 你啥时分回工厂？
he is not coming.他不来了。
they are arriving tomorrow afternoon.他们明日下午抵达。
（5）一般如今时标明将来
用一般如今时标明根据规则估计要发生、组织或方案好的将来的动作。这一规划常用于标明方位转移的动词，如come, go, leave, start, begin, sail, return, stop, end, open, stay等。
the plane starts at 8 o’clock in the morning.飞机上午8点起飞。
when does the show begin?展览啥时分隔端？
（四）如今进行时
如今进行时由“助动词be（is/am/are）+ v-ing”构成。它的用法如下：
1、标明说话人说话时正在进行的动作，它不触及该动作的发生和成果，译成汉语“正在”，这一用法常和标明此时的时刻状语连用，如now, at this time, at present，at the moment等。
i’m doing my homework now. 我如今正在做作业。
it’s raining hard.天正鄙人雨。
2、标明现期间但并非眼下正在进行着的动作，这种动作常与标明一段的时刻状语连用，如these days , this week等。
he is writing a novel now.当?谛匆槐拘∷怠?
he is learning english at college.他在大学学英语。
i’m sleeping in the sofa because my parents have come for the weekend.我睡沙发是因为我父母来度周末。
3、标明将来的动作
标明某个按迩来的方案或组织即将进行的动作，或即将初步或进行的动作。常用的这类词go, come, leave, stay, start, arrive, land, meet, move, return, stay, stop, do, dine等，一般要与标明将来的时刻状语连用，以差异此时正在进行的动作。
he is coming to see you tomorrow.他明日要来看你。
his sister is leaving for hong kong tomorrow.他姐姐明日启航去香港。
4、表达褒贬等豪情颜色
和always ,forever, continually, constantly, instantly, continuously等频度副词连用，标明常常、重复发生的动作，不偏重动作的进行性。表达厌烦、愤恨、诉苦、赞扬等情感。
he is constantly leaving his things about.他常常乱丢东西。（表责怪）
she is always changing her clothes.她老是换衣裳。（表责怪）
he is always working hard.他老是学习很吃苦。（表欣赏）
they’re forever quarrelling about something.他们老是为某件事争持。(不满)
5、wonder, hope, think 等标明心思的动词用于进行时可以标明悠扬的口气
i’m wondering if i may come a little late.我在想我能不能晚来一会儿。
i’m hoping you’ll give us some suggestions.我很期望你给咱们一些主张。
（五）曩昔进行时
曩昔进行时标明曩昔某一时刻或某段时刻正在进行的动作。构成曩昔进行为常由“助动词be的曩昔时was/were+如今分词”构成。用法如下：
1、标明曩昔某一时刻正在或曩昔某段时刻正在进行的动作。动作发生的特守时刻常用一个短语或时刻状语从句来标明。
it was raining at 6 o’clock this morning.今早六点钟时正鄙人雨。
i was living in my teacher’s house when i was in middle school.上大学时，我住在教师家里。
留心：在富含时刻状语从句的复合句中，连续时刻较长的动作用曩昔进行时，另一个动作用一般曩昔时。假定标明两个连续动作在曩昔某一时刻一起进行，而不思考动作的先后长短，则主句和从句的谓语动词都用曩昔进行时。
when i entered the room, she was sitting at her desk.我进屋的时分，她正坐在书桌前面。
the students were reading while the teacher was grading their homework.学生们在看书，而教师在批改他们的家庭作业。
2、用来描绘故事发生的布景
在口语或记叙文中，可以用曩昔进行时标明的持续动作作为背就连以此引出由一般曩昔时标明的新动作。
it was a dark night. the wind was blowing hard and the rain was falling heavily. a young woman suddenly appeared on the river bank.一个漆黑的夜晚，暴风高文，大雨倾盆，一位年青的妇女俄然呈如今河滨上。
he was just falling asleep when there was a loud knock at the door.他刚要人睡，这时俄然有人很响地敲门。
3、替代曩昔将来时
用于come, go ,leave, start, stay, arrive等表方位转移的动词，以标明曩昔即将发生的动作。
they wanted to know when we were leaving for shanghai.他们想晓得咱们啥时分去上海。
she asked me whether he was starting the next day.她问我他是不是第二天就走。
4、表达褒贬等豪情颜色
曩昔进行时也可以和always，constantly，continually，forever等连用，标明说话人的片面豪情，如赞扬、不满、厌烦等。
he was always trying out new ideas.他老是实验一些新的想象。
he was forever complaining about something.他老是怨这怨那。
5、wonder, hope, think，want 等标明心思的动词用于进行时可以标明悠扬的口气
—excuse me, sir. would you do me a favor? –打扰了,先生。你能帮我个忙吗？
—of course. what is it? –当然。啥事？
—i was wondering if you could tell me how to fill out this form. –我一向在想你是不是能告诉我怎样填这张表。
-what were you wanting?你要啥？
– i was hoping you would help me with the work.我期望你能帮我做这项作业。
（六）如今结束时
如今结束时由“助动词have/has+曩昔分词”构成。如今结束时的用法如下：
1、标明发生在曩昔的动作或存在的状况到说话时刚刚结束或结束，一般运用不具有连续意义的动词，arrive, become, begin, break等。这种用法可带有迄今意义的时刻状语，如up to now, so far, already, not…yet等。也可带有包括如今时刻在内的时刻状语，如now, recently, in the past few years, just等。
i have already posted the photoes.我现已把相片寄出了。
i have just finished my work.我刚刚结束作业。
2、标明从曩昔某时初步一向连续到如今的动作或状况，或许还将持续下去。这种用法一般用于具有连续意义的动词，如live, stay, work等，并带有标明时刻段的状语或迄今意义的时刻的状语，如for, since等。
they have lived in beijing since 2002.他们自从2002年以来就住在北京。
my brother has been ill for two days. 我弟弟病了两天了。
留心：标明时刻短的动作动词或状况动词不能用于这种用法，如arrive, come, go, leave等。如，不能说：she has come to our school for 2 years.
3、标明到如今中止的一段时刻内重复发生的动作。常与often, always 等连用。
he has been late for class every morning this week.这个星期他每天早晨都迟到。
my father has always gone to work by bike.我父亲一贯骑车上班。
4、用于时刻、条件状语从句中，标明将来要结束的动作或一个动作先于另一个动作。
he will be back before i have finished my work.我结束作业之?峄乩吹摹?
don’t get off the bus before it has stopped.车未停稳请勿下车。
5、用在“it(this) is(will be ) the first/second/third…time+ that从句”中
在这种从句中，当主句动词为is/will be时，that-从句的动词用如今结束时，that 可以省掉。主句中的主语还可用this, this evening等; 这种规划中的first也可用其他序数词；time也可由其他名词替代。
this is the first time i have been here.这是我初度来这儿。
it’ll be the first time i’ve spoken in public.这将是我初度当众说话。
6、 “it (this)is the best( worst, most interesting等) + 名词+从句”规划中的从句需求用如今结束时
this is the best film i’ve ever seen.这是我所看过得最佳的一部影片。
this is the most interesting novel he has ever written.这是他写得最佳的一部小说。
7、如今结束时可以标明反问的口气（与when连用）或豪情颜色
– who is jerry cooper? 杰利·库珀是谁呀？- haven’t you met him yet? i saw you shaking hands with him at the meeting. 你还没见过他？我看见你和他在开会时握手了。
now you’ve done it.你这下可惹祸了。
when have i been treated like this?我啥时分吃这一套？
8、如今结束时与一般曩昔时的差异
如今结束时与一般曩昔时都标明结束的动作，但如今结束时偏重这一动刁难如今构成的影响或成果，偏重的是如今的情况，所以它不能和标明曩昔的时刻状语连用，如yesterday, last night, three weeks ago, in1990等。而一般曩昔时则标明曩昔的动作或状况，和如今不发生联络，它可以和标明曩昔的时刻状语连用。
i have seen the film.我看过这部影片。（我晓得这部影片的内容）
i saw the film last
week.我上星期看了这个影片。（只阐明上星期看了这个影片，不触及如今的情况）
he has lived here since 1972.1972年以来他一向住在这儿。（他如今还住在这儿）
he lived here in 1972.1972年他们住在这儿。（不触及到如今是不是还住在这儿）
9、运用如今结束时应留心的几点
（1）如今结束时不能和清楚标明曩昔的时刻状语(如yesterday, last week, in 1976, two days ago, just now等)连用，但可以和下列不断定的时刻状语连用，如never, ever, always, yet, already, before, just, lately, so far, recently等。
she has already come.她现已来了。
i have met him before.我早年曾见过他。
so far , no man has travelled farther than the moon.至今没有有人到过比月球更远的当地。
（2）如今结束时还可以和标明从曩昔某时刻连续到如今 (包括如今在内)的时刻状语连用。如today，this year，these days，this morning等。
it has been hot this summer. 本年夏天一向很热。(说话时仍是夏天)
i have written two letters this morning. 今日上午我写了两封信。(说话时仍是上午)
（3）标明时刻短意义的动词，如open，go，come，die，leave，arrive，begin， return，stop等，不能与标明一段时刻的状语连用。如要表达”他脱离这儿现已3年了”这一意思时，不能说” he has left here for three years. “而要把其间的动词换为连续性动词或用其他表达法。如上句可用下列方法表达:
he has been away from here for three years.
he left here three years ago.
it is three years since he left here.
（4）have/has been to标明到过某个当地，而have/has gone to标明现已去了某处。
he has been to the great wall.他到过长城。(如今他已不在长城)
he has gone to the great wall.他去长城了。(如今他不在此地)
（七）曩昔结束时
曩昔结束时由“助动词had+曩昔分词”构成。用法如下：
1、曩昔结束时标明曩昔某一时刻或动作早年现已发生或结束了的动作。它标明动作发生的时刻是“曩昔的曩昔”。标明曩昔某一时刻可用by, before等构成的短语，也可用when, before，after，until等引导的从句或经过上下文标明。
by the time he was twelve, edison had begun to make a living by himself.12岁时，爱迪生就初步自个营生。
when we got to the cinema, the film had already begun.当咱们抵达影片院时，影片现已初步了。
2、标明动作在曩昔某一时刻之前初步，一向连续到曩昔的这一时刻，而且还可以持续下去的动作，常和for, since构成的短语或引导的从句连用。
the news came as no surprise to me. i had known for some time that the factory was going to shut down. 听到这个消息我并不感到吃惊。工厂要关闭这件事我早就晓得了。
by the time i left the school, he had taught the class for 3 years.到我结业时，他现已教那个班三年了。
3、用于标明与曩昔实际相反的虚拟条件从句或as if从句中标明与曩昔实际相反
if he had seen you yesterday, he would have asked you about it.假定他昨日看到你，他就会问你这件事了。
had i known that you wanted the book , i would have sent it.假定我晓得你要这本书，我会送来的。
4、放在像said，told，asked，thought，wondered等曩昔时动词的后边，标明在这些动作发生之前现已发生了的作业。
my friend told me that he had passed the exam.我的兄弟告诉我，他现已过了考试。
he asked me whether i had seen the film the night before.他问我头一天晚上是不是看过那部影片。
she wondered who had left the door open.她想晓得谁让门敞着的。
5、用在 “it was the first/second/third…time that…”句型中，that引导的定语从句要用曩昔结束时。
this was the first time they had met in thirty-nine years. 这是39年里他们初度碰头。
it was the first time we had spoken together. 这是咱们初度在一同说话。
6、intend, mean, hope, want, plan, suppose, expect, think等动词的曩昔结束时，标明曩昔未曾完成的想象、意图或期望等，富含某种怅惘。
i had intended to call on you yesterday, but i had an unexpected visitor.我正本昨日方案要去看你，但我来了个不速之客。
we had meant to tell her the news but found that she wasn’t in.咱们本想把这个消息告诉她的，但发现她不在家。
7、曩昔结束常常用规划有“hardly, scarcely, barely … when, no sooner… than等副词的语句里。
she hardly had gone to bed when the bell rang.他刚睡下铃就响了。
no sooner had they left the building than a bomb exploded.他们刚刚脱离大楼，一颗炸弹就爆破了。
（8）曩昔将来时
曩昔将来时一般由 “助动词would(第二、三人称)/should(第一人称)+动词原形”构成。不管啥人称，美国英语皆可用would。用法如下：
1、标明对曩昔某一时刻点而言即将发生的动作或存在的状况。常用于宾语从句中。
i thought they would come to help me.我认为他们会来帮我的。
he said he would wait for us at the bus stop.他说他要在车站等咱们。
2、标明曩昔的某种习气行为
he would sit for hours doing nothing.曩昔他常常坐几个钟头啥事也不做。
he would come to see us on sundays.曩昔星期天他常常来看望咱们。
3、曩昔将来时的其它表达法
（1）was/were going to
①标明曩昔的方案和意图
he was going to start work the following week.他方案下星期初步作业。（方案）
②标明没有完成的方案和意图
he was going to come last night, but it rained.他方案昨晚来，但下雨了。(没完成)
i thought the film was going to be interesting.我想这部影片会很风趣的。（成果不是）
i was going to, but i had an unexpected visitor.我方案来的，但我家来了个不速之客。
（2）was/were to+动词原形
这种规划一般指曩昔的方案组织或注定要发生的作业。假定方案的动作没有完成，要用动词的结束式。
at that time he did not know that quitting the job was to become the turning point in his life.( 注定要发生的作业)那时他不晓得辞去职务将会变成改日子的转机点。
she said she was to take up the position.(标明方案)他说他方案就任。
she said she was to have taken up the position.( 方案但未能完成) 他说他本方案就任。
（3）was/were about to＋动词原形
was/were about to＋动词原形，标明曩昔即将发生的事。
the meeting was about to be held the following day.会议方案第二天开。
（4）标明方位转移的动词 (如go，come，leave，start等)的曩昔进行时，标明依照曩昔的方案组织将在曩昔将来发生的作业。
i didn’t know you were coming.我不晓得你会来。
（九）其他时态
以上为考试大纲附录里需求的8种根柢时态，新课标需求的除上述8种外还有：如今结束进行时和将来进行时等其他几种时态。高考中曾触及到将来结束时和曩昔结束进行时，下列作扼要介绍：
1、如今结束进行时
如今结束进行时由“助动词have/hasbeen+ -ing方法”构成。用法如下：
（1）如今结束进行时标明曩昔的动作持续到如今并有可以连续下去的动作。常和for，since引导的时刻状语连用。
-hi, tracy, you look tired. 你好，特蕾西！你看上去很疲惫。
-i am tired. i have been painting the living room all day.我很累。我刷了一整天房子。
they have been living here for 10 years. 他们住在这儿十年了。
（2）标明一个动作从曩昔某时初步，一向连续到说话时分刚结束。
i have been waiting you for about one hour.我等你大约一个小时了。(说话时”等”的动作刚结束)
she has been working all night long.她作业了一夜。
（3）标明重复（只时断时续，而非一向不断）
we’ve been discussing the matter several times this year.咱们本年已数次谈论那件事。
i have been saying goodbye to some friends today.我今日同好几个兄弟告了别。
（4）如今结束时与如今结束进行时的比照
a. 如今结束时标明到如今中止现已结束，或许在曩昔早年发生过的动作；如今结束时一般标明仍将持续下去的动作。
i have written an article.我写了一篇文章。（已结束）
i have been writing an article.我一向在写一篇文章。（还在写）
b.当如今结束进行时标明刚刚结束时，如今结束时偏重动作的成果，如今结束进行时则偏重动作在不久早年持续进行的景象，并带有感颜色。
now we have cleaned the room; we can move the things in .如今房子打扫好了，咱们可以往里搬东西了。（偏重打扫完了的成果）
—you look so tired. what have you been doing?你看起来很累，你干啥了？
—i’ve been playing football.我踢足球了。（偏重不久前踢球的景象）
2、将来进行时
将来进行时由“助动词shall/will+be+v-ing”构成，用法如下:
（1）标明将来某一时刻或某段时刻正在发生的动作，常与this time tomorrow, at 4 o’clock tomorrow afternoon等时刻状语连用。
i’ll be visiting professor li at 2 this afternoon.今日下午2点我将造访李教授。
at this time tomorrow we’ll be flying over the atlantic. 明日此时咱们正在飞越大西洋的上空。
（2）标明一种现已抉择或必定的动作或情况，或标明某动作将在按方案发生而未结束。
we shall be having a meeting in a minute.咱们一会儿就要开会。
will you be seeing mr.wang this evening? 今晚你接见会面王先生吗？
3、将来结束时
将来结束时标明将来某一时刻之前现已结束的动作。将来结束时由“shall /will +have +v-ed”构成。用法如下：
（1）将来结束时标明将来某一时刻或动作发生之前现已结束的动作，一般与before或by连用。
before long, he will have forgotten all about it.不久他就会全忘掉的。
by the end of this month , we’ll have studied 10 units.到这月末，咱们将学完10单元。
（2）标明持续到将来某一时刻的动作或状况,这动作或状况也可以将持续进行下去。
when they move here next month, we’ll have lived in the city for 5 years.下月他们搬到这儿时，咱们已住在该市五年了。
by the end of this month we shall have been here for two years.到这个月底，咱们就现已来这儿两年了。
（3）标明对如今或将来可以结束动作的估测
she will have arrived by now.她这是可以现已到了。
it is seven. he will have got up.如今7点，他可以现已起床了
4、曩昔结束进行时
曩昔结束进行时首要标明曩昔某一时刻早年一向在进行的动作。曩昔结束进行时由“助动词had+ been+ v-ing”构成。
（1）曩昔结束进行时标明动作在曩昔某一时刻之前初步并连续到曩昔这一时刻。这一动作可以己经中止也可以还在进行。
she told me that she had been studying french for 5 years.她告诉我她己经学习法语5年了。（仍持续）
she told me that she had been waiting for me for an hour.她告诉我她己经等我一个钟头了。（不再持续）
he had been studying english before entering the college.他在上大学之前一向在学英语。
（2）标明重复的动作、试图、心境、迩来的情况
you had been giving me everything.你对我真是有求必应。（感谢）
i had been studying the meaning of the poem.我一向在研讨这首诗。（我还没懂）
（十）断守时态的技巧
1、从语句本身趁便的时刻状语来断守时态。
时态与时刻状语一般遵从以下几条原则：
（1）句中若有every day, every friday afternoon, twice a week, often, always, usually等类似的时刻状语时，语句多用一般如今时。
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