高中英语题1.Has Sam finished his homework today? Yes.He__it this

来源：学生作业帮编辑：神马作文网作业帮分类：英语作业时间：2024/10/04 00:19:26

高中英语题
1.Has Sam finished his homework today?
Yes.He__it this morning.
A.did B.has done C.was doing D.had done[为什么不选c项】
2.The job proved to be much more difficult than the one I__before.
A.have been offered B.was offered C.would be offered D.had been offered[为什么不选b项啊】
3.改错Thousands of children became so unlucky one who lost their fathers or mothers.

1:did理由：上句是现在完成时,现在完成时是过去发生的事对现在造成的影响,（就是事情发生在过去）,结合上下文应选did,现在谈论今天早上发生的事.
2：had been offered 理由：先说下prove的用法吧,prove作为系动词时（相当于seems啊什么的）,用主动表被动.如果prove作实意动词用时用作被动,一般只可能是用作sth is proved.就是被证明了.但是如果是被证明为,或证明是,就要用主动.sth proved(to be)
再说下后面的before
它主要用于过去完成时,故该句应用D项.
3:ones
理由：thousands of是表示数千的...（主要是形容东西,事物很多,数以千计）.
1．one只能替代单数名词,one的复数形式ones只能替代复数名词,
thousands of后跟的是复数名词所以后面的one也要对应但one只能替代单数名词,所以要用ones

高中英语题1.Has Sam finished his homework today? Yes.He__it this -Has Sam finished his homework today?-Yes.He ______ it this — Has Sam finished his homework today? 1、Has Sam finished his homework today — Has Sam finished his homework today? -Has Sam finished his homework today, Anne? 这一题怎么写has sam finished his homework today? -----Has Sam finished his homework today?-----I have no idea — Has Sam finished his homework today, Anne? 改错Sam has finished his homework a moment ago. 高中英语题1.Only when he had finished his homework ___ go outside has sam finidhed his homework today?I have no idea.He ----it