2024下半年大学英语四级核心语法大集合

2024-10-30 08:31:00来源:网络

  语法一直是学习英语的难点,但打好语法基础对提高成绩至关重要!新东方在线小编为大家整理了2024下半年大学英语四级核心语法大集合,希望能为各位考生提供参考和帮助。

  2024下半年大学英语四级核心语法大集合

  虚拟语气:与事实相反的

  一、主语从句:

  1、it is +adj\\n that + 虚拟

  2、it is +done(表示建议、要求)that + 虚拟

  二、宾语从句:

  1、I suggest(表示命令;建议;请求) that shoule +do (在虚拟语气中,shoule have done = ought to have done,其他时候should 不等于ought to) 2、I wish that (用虚拟语气)

  三、目的状语:

  Lest或者for fear that + (虚拟语气)should do

  四、 if从句: 即 主句, if 从句

  1、倒装代替if从句:Had\\Were\\Should ,主句

  2、but for = without(如果不是)代替if从句, 两个都是介词 But for \\without + 名词 ,主句

  3、with + 名词 ,主句

  4、if only + (if 从句) 要是该多好

  五、隐藏虚拟语气:本打算做但结果没有做的

  1、had hoped\\intended\\planned\\expected\\wanted\\meant to do

  2、hoped to have done

  3、be(was\\were) + to have done 4、would\\should like to have done Would have done 表意愿、将来

  Should have done 竟然做了、本应该做的 Could have done 有能力做 Might have done 表示猜测

  Need have done 本来需要做的却没有做

  主从句时间不一致情况下的虚拟语气

  有时条件从句中的动作和结果与主句中的动作,发生的时间不一致,这时动作的形式应根据它所表示的时间加以调整。如:

  1. 从句表示将来,主句表示过去:

  ⑴、If I were not to make a preparation for my experiment this afternoon, I would have gone to see the film with you last night.

  2. 从句表示过去,主句表示将来:

  ⑴、If they had started the early morning yesterday, they would be here now.

  ⑵、If we hadn' t made adequate preparations, we shouldn' t dare to do the experiment next week。

  3.从句表示将来,主句表示现在:

  ⑴、If we shouldn't have an exam this afternoon, I would go shopping now.

  4.从句表示过去,主句表示现在。

  ⑴、If they had stared the early morning yesterday, they would be here now.

  ⑵、If you had followed my advice, you would be able to finish the work now.

  5.从句表示过去,主句表示过去和现在

  ⑴、If you hadn’t lent me some money, I couldn’t have bought the new house and most likely I would be still living in the dangerous house now.

  在不少情况下,虚拟式已变成习惯说法,很难找出其暗含的条件。

  (1) 、You wouldn’t know. 你不会知道。

  (2) 、 would like to come. 我愿意来。

  (3) 、I wouldn’t have dreamed of it. 这是我做梦也不会想到的。

  (4) 、He told the story in such minute detail that he might himself have been an eye-witness. 他将那事讲的非常仔细,简直就象他亲眼看见一样。

  6.从句表示现在,主句表示过去

  ⑴、If I were you, I would have gone to her birthday party.如果我是你,我就去参加她的生日晚会了。(从句说明现在,主句说明过去。)

  以上就是新东方在线小编为大家整理的“2024下半年大学英语四级核心语法大集合”的全部内容啦,预祝各位小伙伴顺利通过四级考试


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