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限制词: 置于名词以前，限命名词的意函。限制词包括冠词(a, an, the)、this、that、every、each、which与that。问题最常产生于辨别何时该用哪个限制词。
介系词: 置于名词或代名词以前来暗示在同个句子或子句中单字间的瓜葛。介系词最难搞的就是它没有太多法则可以遵守，若是不肯定该若何利用的时辰，建议操纵以下咱们供给的东西来查抄喔!
主谓一致: 单数主词必要单数动词；复数主词必要复数动词。当主题是包括介词短语的名词短语时，最多见的问题就是呈现。问题常呈现在名词片语为主词且包括介系词片语的时辰。
动词型态: 有真相动词、不定词(to+真相动词), 第三人称单数动词(动词+s)、如今分词(动词+ing)、曩昔简略与曩昔分词。有些动词的型态比力少，反观”be”动词有八个型态。动词型态紊乱的重要来历是利用毛病的分词和过分利用如今分词(动词+ing)。
动词时态转换: 问题经常产生于在某一时候点会商一个主题但却在统一个子句中利用两个以上的动词时态。 统一个句子中应当要保持统一时态，不然须此外写一个新子句或句子来防止句子时态紊乱。
为甚么冠词是最多见的语法毛病呢？
冠词感受是个不起眼的小字，但在句中有偏重要的感化。对付很多英语是第二说话的人来讲，母语中可能没有雷同冠词的用法，以是可以理解在写作中或对话时利用辨别冠词会是很大的问题。但冠词的问题已比欧洲其他另有性别分类的冠词简略多了。
除由于说话分歧而不认识冠词感化以外，另有另外一个可能的缘由是由于不肯定接在冠词后面的名词是不是为可数。固然有很多破例，但大部门的冠词利用都仍是按照名词的可数不成数来决议。想晓得更具体的冠词利用果断，请参考冠词的用法? 若何果断利用准确的冠词?
冠词的首要性
冠词可以或许限制出名词的性子，就这一到三个字母可以或许呈现出分外的意思，是不是很诧异呢？为了让大师更清晰冠词的感化，供给如下例子。
你奉告朋侪你想买车，可以说:”I really want a car”或”I really want the car.”，但得先决议是想要的是任何一台车(a car)仍是特定某台车(the car)。假如你选择了后者，但朋侪其实不晓得是特定哪一台车的话，他可能会发生疑难。由于你并无将”the car”的具体信息与朋侪分享过，致使他发生迷惑。一样的，若是你选择了前者”I really want a car”，朋侪仍是会不克不及理解。
这时辰有两种方法解决: (1) 先说”I really want a car”，接着再用”the car”起头下一个句子来具体先容是哪一台或(2) 利用”I really want the car “然后用限制子句来具体描写你想要的那台车。范文以下:
(1) I really want a car. In fact, I want one exactly like the car I saw parked in front of Joe’s house yesterday.
(2) I really want the car I saw parked in front of Joe’s house yesterday.
若何点窜常见的语法毛病?
1. 误用限制词
冠词
决议利用哪一个介系词前，先找出名词为可数还不成数，然后照着附档与文章的法则。可简略分成如下:
If you have a noun + prepositional phrase that pinpoints one specific noun, use “the” in front of the noun.
If you introduce a specific noun for the first time, use “a” or “an,” followed by “the” for subsequent mentions.
If you mean “any” of that noun, use “a” or “an.”
If you 
mean “all” members of that noun class (each and every one, generally), then, for countable nouns, use the plural + no article. For uncountable nouns, use the singular + no article.
If you mean a category as a whole (and not each and every member of that category), use “the.”
可数名词:
The apple is delicious. → Apples are delicious.
I read the new book. The book was fascinating. → I read a new book. The book was fascinating.
不成数名词:
The water is healthy for you. → Water is healthy for you.
I bought the water yesterday, and now I will put the water in the fridge. → I bought water yesterday, and now I will put the water in the fridge.
批示形容词 (This/That/These/Those)
利用批示代名词看成主词时须谨慎是不是有批示不清晰的环境呈现。
法则
this + singular noun (something nearby or recently mentioned)
that + singular noun (something “over there”)
these + plural 
noun
those + plural noun
范文
This is good for you. → This exercise is good for you.
We should adopt a new policy. That policy would help us streamline operations . → We should adopt a new policy. This policy would help us streamline operations.
That would make her happy. → That promotion would make her happy.
Cats are feisty. Those animals are very independent. → Cats are feisty. These animals are very independent.
What do you want to do with these boxes over there? → What do you want to do with those boxes over there?
Other vs. Another
“other” 和”another”来指其他更换选项，点击以下图片来看看怎样利用。此外”other”与”another”的分歧在于选项的数目。
I have two books left. Take this one. Thanks, but I want the another. → I have two books left. Take this one. Thanks, but I want the other one.
2. 用错介词
介词是个蛮辣手的文法，好动静是凡是你可以用动词来更换掉介词短语! 当你必要利用创建瓜葛的单词时，这里有几个技能:
习用语中的介词是固定的:这一类都没有遵守介词的法则，若是不太肯定的话，可以操纵Merriam-Webster’s来查抄
不要持续用两个介词:白话上常如许没有瓜葛，但在写作上必须要防止。比方: “I had to get off of the train.” → “I got off the train.”
也可使用像Google Book’s N-gram Viewer，其涵盖了1800年到2000年的所有书籍内容，并计较各词语产生的频率。若是你对付介系词的利用有疑虑，输入该片语的分歧变形(用逗号分隔)后点击”enter.” 该片语的利用频率就会以图表显现，而应当要选择2000年最常被利用的短语(除非你想利用特定年月的说话)。
3. 主词动词一致性
也就是动词必需与主词的单复数一致。问题常产生于主词有介系词片语的时辰，记得动词必需与介系词前的名词单复数一致。
Noun1 + Preposition + Noun2 + Verb that agrees with Noun1
The way in which we co妹妹unicate with others have changed dramatically. → The way in which we co妹妹unicate with others has changed dramatically.
想参考其他资本，可以点击如下链接:
Purdue’s Online Writing Lab (OWL): owl/resource/599/01/
Gra妹妹arbook.com:
4. 动词型态:
两个最常产生的毛病是利用毛病分词与过分利用如今分词。
毛病分词
留心不法则动词，有任何疑难可以操纵Merriam-Webster来确认是不是拼写准确。
美式英语与英式英语在特定动词分词的拼写上不太同样，比方:美国利用”learned”而英国则利用”learned”和”learnt” 。
过分利用如今分词
利用如今简略式来描写一般究竟、习气和某物的状况。
The sun is always rising in the east. → The sun always rises in the east.
如今举行式 (verb+ing)用来描写临时性动作和暗示等等想要做的事。当你想要阐明在某个动作的举行进程中也产生另外一件事变时，可使用如今举行式。
I visit my sister this week. → I am visiting my sister this week.
5. 动词时态转换
在统一子句中的动词必需利用一样的时态，若是混用动词时态则可能让读者感触迷惑。
Joe watched the movie and laughs out loud. [Joe finished the movie and is now laughing? This sentence doesn’t make sense, right?] → “Joe watched the movie and laughed out loud,” [Joe completed these actions, and logically, did so at the same time] or “Joe is watching the movie and is laughing out loud” [Joe is currently performing these actions simultaneously].
谈到特定主题 ，反复确认副词子句或句子的动词时态。
Joe eats chocolate whenever he got upset. → “Joe eats chocolate whenever he gets upset,” [Joe currently has this habit] or “Joe ate chocolate whenever he got upset” [Joe no longer has this habit]
有时辰混历时态也是公道的，比方你在暗示一个动作的成长时。
I am editing the book that I wrote. [Naturally, to edit a book, it must already be written.
