英语习题求解1.They fulfilled the plan earlier than they__.A.have e

1.They fulfilled the plan earlier than they__.
A.have expected B.expected C.were ecpected D.had expected为什么不能选B?而是D?
因为expect期望在fulfil完成之前发生,所以用过去完成时表示过去的过去.
2.The thief__while climbing over the garden wall.A.has caught B.was caught C.caught D.being caught 答案选B,为什么不能是D?while后是Climbing,while表同时,前后的形式不应该一样么?都是进行时?
首先D项形式不对,过去进行时作谓语少了was.
拓展：while作连词的用法：
1） while 引导的状语从句还可以表示“某个动作正在进行的同时,另一个动作也在进行之中”.例如：
While the teacher was speaking,the students were listening.
（老师讲课时,学生们在听.）
While he was writing,I was reading.
2当一个长动作在进行过程中发生了一个短动作,那么长动作用进行时,短动作用一般过去时.
如：While we were talking,the teacher came in.
（我们正在谈话时,老师进来了.）
While I was watching TV,the bell rang.
由以上可以看出这句话中,爬花园的墙是长动作,被逮住是短动作.所以这句话完整的说法就是;
The thief was caught while （he was）climbing over the garden wall.
3.The committee__nine members.A.composes of B.composes in C.consists of D.consists in 这四个选项的区别是什么?
答案选C.consist of 意思是由...组成,没有被动语态.
be composed of 意思是“由...组成”,必须用被动.
consist in 意思是存在于
没见过compose in
4.China has been following the foregin policy to develop relations with other counteies on the__of the five principles of feaceful co-existence.
A.basis B.base c.account D.foundation
这个题为什么选A?B为什么不对?其他两个选项为什么不对?d不也是基础的意思么?
on the basis of意思是以...为基础
be based on 以...为基础
on the basis of the five principles of feaceful co-existence.以和平共处五项原则为基础
加油!

1，因为fullfilled用的是过去时态。
2、while 后面省略了he was。选D的话，这个句子就没有谓语动词了。
3、C是“由什么组成”的意思，用主动时态。D是“存在于”的意思，主动时态。A意思和C一样，但要用被动形式，be coposed of。B没有这个短语。
4、查字典吧。account是账户的意思。...