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用动词和情态动词的过去时形式表示假设意义
版块:教育培训   类型:普通   作者:clcfone   查看:38   回复:0   获赞:0   时间:2022-08-25 15:12:45

用动词和情态动词的过去时形式表示假设意义
1) 用动词过去时形式表示假设意义
Wish之后的从句 主语+wish+(that)+从句主语+ 
were/动词过去式(对现在情况的假设)
had+过去分词(对过去情况的假设)
would/could/might+动词原形(对将来情况的假设)
e.g., I wish I hadn’t eaten so much last night.
It is (high) time that 后面的从句谓语动词要用过去式 
e.g., It is time that the children went to bed.
或用should加动词原形,但should不可省略。
It is high time that the children should go to bed.
would rather/sooner/prefer 之后的从句动词用过去时或完成体

e.g., I’m told they are going by bus, but I would rather they went by train.

高中英语单词表3500词必背
英语单词速记
人教版初中英语单词

If only之后的从句
e.g., If only we students didn't have so much homework
As if/as though之后的从句  e.g., She acts as if she were an expert.
Suppose/Supposing之后的从句 
e.g., Supposing you met Andy now, what would you say to him?

2) 用情态动词的过去时形式表示假设意义
常见于非真实条件句,含蓄条件句和某些特定语境
用于非真实条件句 主句多用情态动词过去时,条件句用动词的各种过去时态,
用于含蓄条件句 e.g., In different circumstances, I might have agreed.
虚拟条件句的倒装:如果从句中含有were/had/should,可以省去if,将句子倒装,即将were/had/should 提到主句前。
E.g., Had I persuaded him not to do so, he wouldn't have made such a serious mistake.  
(= I regret not persuading him.)

题1: —What do you think of teacher, Bob?
—I find it fun and challenging. It is a job _____ you are doing something serious but int eresting.
A. where             B. which            C. when         D. that
题2: All the neighbors admire this family, ________ the parents are treating their child like a friend.
A. why B. where C. which D. that
题3: Later in this chapter cases will be introduced to readers ________ consumer complaints have resulted in changes in the law.
A. where B. when C. who D. which
题4: The age ____ children can go to school is seven.
A. at which      B. by which    C. which      D. whose
题5: The lazy boy is expecting a way ____ he can get through the exams without hard work.
A. which B. with which C. in which D. whom
答案
题1: A
详解:_____ you are doing something serious but interesting为定语从句,其先行词为job。因为从句缺少地点状语in the job , 故用where。
题2: B
讲解:所有的邻居都对这个家庭赞赏不已,在这个家庭里,父母对待他们的孩子就像对待朋友一样。先行词family后跟非限制性定语从句,此处缺少地点状语 in this family,故用where。
题3: A
详解:________ consumer complaints have resulted in changes in the law为定语从句,其先行词是前面的cases。空白处缺少地点状语in the cases,所以选where。
题4: A
详解:____ children  can go to school是定语从句,其先行词是age。因为从句缺少时间状语at the age, 所以选at which。
题5: C
详解:____ he can get through the exams without hard work是定语从句,其先行词是way。定语从句可与先行词连成he can get through the exams without hard work in the way,所以选 in which。

 
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