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几个英语语法及词汇单项选择的问题答案

来源:学生作业帮 编辑:作业帮 分类:英语作业 时间:2024/07/18 06:46:08
几个英语语法及词汇单项选择的问题答案
1.Once enviromental damage( ),it takes many years for the system to recover.
A.has done B.is to do C.does D.is done
2.My grandmaster's 80th birthday is( ).
A.in two weeks time B.in ttwo week's time
C.two weeks away D.two week's time
3.( ) the temperate falling so rapidly,we couldn't go on with experiment.
A.Since B.For C.As D.With
4.Marry was reading a fair tale,completely ( ) to the outside world.
A.lost B.having lost C.losing D.lossed
请做出答案来,为什么是此答案而非彼答案.答得好,还会追加分的.
看了几个人的回答,竟然没有人的四个答案是完全一样的,也不知道哪个是权威的?
1、选D.首先确定时态为被动语态,所以先排除B和C选项.
其次,Once在这里作为连词(as soon as;when一旦;一...就...)引导状语从句,这种情况下,从句谓语动词是要用一般现在时的.
再举个例子:Once you understand this rule,you'll have no further difficulty.一旦明白了这条规则,就再也没有困难了.
2、选C.如若用AB的表达法,正确的应是"in two-week's time"需要有连字符构成形容词做定语.
3、选C.“由于气温骤降,实验无法进行下去”
Since引导原因状语从句,多翻译为“既然”,如:since you're ill,I'll go alone.
For作为连词,连接两个句子,一般放在后面,不放在句首.With永远只做介词用,后面不能接句子,只能接短语.如:With the advent of the rockets,the Space Age began.随着火箭的出现,太空时代开始了.As常置于句首,引导原因状语从句,多译为“由于".
4、选C.动名词形式表示伴随状态的.