题目

1 .There_____fewer accidents on this road since the speed limit was introduced.
A .have been B .have had
2.He____more than 5000 English words when he entered the university at the age of 15.
A.would have learned B.had learned
3.I decided to see the doctor,because I____ill during the last two months.
A.was feeling B.had been feeling
4.Susan decided not to work on the program at honme because she didn't want her parents to know what she____
A.had done B.was doing
5.They haven't arrived yet but we____them at any moment.
A.are expecting B.will epect
6 I don't what to do.
这是一个宾语从句 ,从句what to do 这是什么结构,能这么用?
7 What he used to think was beautiful now does seem ugly.
这句话的结构是什么?was 和 seem 不是两个动词吗?
求比较权威的答案,选择题最好给点分析.
第6个打错了 是 I don't know what to do.

提问时间：2020-07-31

答案

1.A 后面有since 所以前面要用现在完成时,这个句子是there be句型
there is a few accidents 所以改成完成时就是 there has been a few accidents.
2.B 当他15岁上大学时就已经有5000的词汇量了.因为后面的时间状语是过去的时间点,在那个时间点他“已经”做完某事,所以用过去完成时.
3.B 过去完成时是过去的过去,这句句子中,在我做决定之前,我就已经不舒服了几个月了,而做决定句中用的是过去时,所以不舒服是过去的过去,用过去完成时.
4.B 这个项目她还没做完,而是正在做,不能用 had done,应该用 was doing.
5.A at any moment(now) 是提示现在进行时的时间状语,用are expecting
6 这句话打错了,或者书上印错了,没有这种句子结构,句子成分缺失,缺少谓语,如果是印错的话,很可能是 i don't know what to do
7.句子的前半句是 what 引导的主语从句 整个句子又用了强调语气.即：
It does seem ugly >> 是 It seems ugly 的强调语气
what he used to think was beautiful 是一个 主语从句,意为：那些他曾经认为美丽的事物.
楼主还有问题的话,希望以上回答能帮到楼主O(∩_∩)O