Question

【题目】同义句转换，每空一词。
（1）Planting trees every year is necessary for us.
for us to plant trees every year.
（2）I spend half an hour doing morning exercises every day.
It me half an hour to morning exercises every day.
（3）They kept on talking until the teacher came in.
They didn't until the teacher came in.
（4）The teacher said, "Don't cheat in exams, children."
The teacher asked the children cheat in exams.
（5）I think that it is important to learn English well.
I think to learn English well.

Answer 1

【答案】
（1）It's；necessary
（2）takes；do
（3）stop；talking
（4）not；to
（5）it；important
【解析】⑴句意：每年种树对我们来说很有必要。句型：It's+形容词+for/of sb+to do sth 做某事对于某人来说……，it是形式主语，指代后面的动词不定式。故填It's necessary.’
⑵句意：我每天花半个小时做早操。句型：It takes sb time to do sth。故填takes；do。
⑶句意：他们一直在讲话，直到老师进来。延续性动词+until从句=not+短暂性动词+until从句。故填stop talking。
⑷句意：老师说：“孩子们，考试别作弊。”ask sb not to do sth请某人别做某事，故填not to。
⑸句意：我认为学好英语很重要。句型：think it+形容词+to do sth 认为做某事……，it指代不定式，是形式宾语，故填it important。