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专四必备语法:时态语态

宣布工夫:2015-11-23内容泉源:VOA英语学习网

一、时态、语态

时态、语态需求掌握的要点:

1.表达未来时的方式:

(1)在工夫、条件、退让从句中,普通如今期间替未来时,但要留意区别从句的范例,如:

I’ll tell him when you will ring again. 我通知他你什么时分再来德律风。(宾语从句)

比拟:I’ll tell him when you ring again.你再打德律风时我通知他。(状语从句)

(2)在make sure, make certain, see (to it) 后的that从句中,谓语动词用普通如今期间替未来时,如:

See to it that you include in the paper whatever questions they didn’t know the answer to last time.

(include 不克不及用will include或其他方式)

2.完成时是时态测试的重点,留意与完成时连用的句型和工夫状语:

(1)by/between/up to/till +过来工夫、since、by the time/when +表现过来发作状况的从句,主句用过来完成时。

如:We had just had our breakfast when an old man came to the door.

Between 1897 and 1919 at least 29 motion pictures in which artificial beings were portrayed had been produced.

(表现1919年时已发作的状况)

(2)by +未来工夫、by the time/ when +谓语动词是普通如今时的从句,主句用未来完成时。如:

By the time you arrive in London, we will have stayed in Europe for two weeks.

I hope her health will have improved greatly by the time we come back next year.

(3)by now、since +过来工夫、in/during/for/over/the past/last few(或详细数字)years/days/months,主句用如今完成时,如:

The changes that had taken place in air travel during the last sixty years would have seemed completely impossible to even the most brilliant scientists at the turn of the 19th century.

但在it is +详细工夫since/before这一句型中,主句更多的时分不必完成时。

It is four years since John left school.

(4)在It is the +序数词/描述词最初级+that的定语从句中,谓语动词常用如今完成时。如:

It isn’t the first time that I have found myself in an embarrassing situation.

(5)在no sooner…than…, hardly/scarcely…when…句型中,主句常用过来完成时。

3.完成停止时指举措在完成时的根底上还要持续下去。如:

The company has been promising a rise in salary for ages, but nothing has happened.

时态、语态答题思绪:

(1)先依据选项的区别点确定考题要点为时态,然后回到题句中寻觅给出的或表示的工夫状语,减少选择范畴,进而选出准确答案;

(2)依据谓语动词与句子主语或非谓语动词与其逻辑主语的干系,确定句子是自动语态照旧主动语态。

 

来自:千亿国际文娱网页版_千亿国际文娱|www.qy449.com 文章地点: http://www.tingvoa.com/html/20151123/297676.html