学文网大学英语必考语法考点
导语：大学英语的语法比高中时代学得更深入了，考点也有所改变，下面是收集整理的大学英语必考语法考点，欢迎参考!
1.as...as...引导的比较级：
(1)“as +形容词或副词原级+ as+被比较对象”结构。例句： He studies as hard as you. 他像你一样学习努力。
(2)在否定句或疑问句中可用 not so…as…. 例句：He can not run so/as fast as you. 他没你跑得快。
2.only引导的倒装句型：only +状语 (或状语从句)位于句首时，句子部分倒装。
例句： Only by diligence and honesty can one succeed in life. 只有勤奋、正直，一个人在生活中才能成功。
注意：但 only修饰主语时，不倒装。例句： Only that girl knew how to work out the problem. 只有那位女生知道怎样解那道题。
3.wish引导的虚拟语气：wish 后面的从句，当表示与事实相反的情况，或表示将来不太可能实现的愿望时，其宾语从句的动词形式为：
(1)表示对现在情况的虚拟：从句动词用过去式或过去进行式表示，be 的过去式用were.
I wish I knew the answer to the question. 我希望知道这个问题的答案。(可惜不知道。)
(2)表示对过去情况的虚拟：从句动词用had +过去分词。
I wish (that) I hadn’t wasted so much time. 我后悔不该浪费这么多时间。( 实际上已经浪费掉了。)
(3)表示对将来的主观愿望：谓语动词形式为“would/ should/ could/ might +动词原形”。在这种情况下，主句的主语与从句的主语不能相同，因为主句的主语所期望的从句动作能否实现，取决于从句主语的态度或意愿(非动作名词除外) 。
I wish it would stop raining. 但愿雨能停止。
注意：若wish 后的宾语从句中用 would，可以表示请求，通常意味着说话人的不快或不满。
例句：I wish you would be quiet. 我希望你安静一些。
4.it形式宾语：和it 作形式主语一样， 我们常用it 来作形式宾语， 把真正的宾语从句放在句末， 这种情况尤其出现在带复合宾语的句子中。
例句：He has made it clear that he will not give in. 他表明他不会屈服。
5.The+比较级，the+比较级 表示“越.....越......"
例句：The more scared we are, the stronger the difficulty will become。我们越害怕困难，困难就会变得越强大。
6.as引导的非限制性定语从句
在as引导的非限制性定语从句中，连接代词as在句子中可以作主语、宾语或表语等，可以指人或物。其在定语从句中的位置比较灵活，即可以在句子 前面，在句子中间或句子末尾。常用的结构有：as we all know; as is well known to…; as is often the case; as is said/mentioned above; as has been said before; as I told you before; as is evident; as often happens; as can be seen; as is/was expected; as we expect; as I can remember等。
7.which引导的非限制性定语从句
which引导的非限制性定语从句既可以指整个句子内容，也可以指句子的部分内容(如单词或词组等)，在句子中可以作主语、宾语(动词或介词 的)、定语等。注意它在句子中的位置：只能放在主句后，不能放在主句前。表达的内容是"不好的"、"事先没有预料到的"等时，常用which，只指物。
as, though, although引导的让步状语从句。
[注意]although位于句首;though位于句首或句中;as位于句中=though。它的词序是把句中强调的形容词、副词、动词或名词放在连词前。
拓展：大学英语六级语法必考语法知识讲解
1) It is demanded / necessary / a pity + that…结构中的主语从句的谓语动词要用should 加动词原形， should 可省略。
句型：
(1)suggested It is
(2)important that…+ (should) do
(3) a pity
(1)suggested, ordered, proposed, required, demanded, requested, insisted; + (should) do
(2)important, necessary, natural, strange
a pity, a shame, no wonder
(3)It is suggested that we (should) hold a meeting next week.
It is necessary that he (should) come to our meeting tomorrow.
2)在宾语从句中的应用
在表示命令、建议、要求等一类动词后面的从句中。
order, suggest, propose, require, demand, request, insist, command, insist + (should) do
I suggest that we (should) hold a meeting next week.
He insisted that he (should ) be sent there.
注意： 如suggest, insist不表示"建议" 或"坚持要某人做某事时"，即它们用于其本意"暗示、表明"、"坚持认为"时，宾语从句用陈述语气。
The guard at gate insisted that everybody obey the rules.
判断改错:
(错) You pale face suggests that you (should) be ill.
(对) Your pale face suggests that you are ill.
(错) I insisted that you ( should) be wrong.
(对) I insisted that you were wrong.
3)在表语从句，同位语从句中的应用
在suggestion, proposal, idea, plan, order, advice等名词后面的表语从句、同位语从句中要用虚拟语气，即(should)+动词原形。
My idea is that we (should) get more people to attend the conference.
I make a proposal that we (should) hold a meeting next week.
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