Question

they haven’t heard the news yet 正确吗?

1.They have already heard of the news.（改为否定句）
They _____ _____ of the news _____.
2.Thew new bike cost me about 700 yuan.(不失愿意改写）
I _____ about 700 yuan _____ the new bike.
3.It took him about two weeks to write the report.(不失愿意改写）
He _____ about two weeks _____ _____ the report.
4.He went to bed after he finished his homework.(不失愿意改写）
He _____ _____ to bed _____ he finished his homework.
5.He got up too late to catch the early bus.(改为复合句）
He got up _____ late _____ _____ _____ _____ the early bus.

Answer 1

1.haven't heard,yet(因为这是现在完成时的否定句,already在变成否定句时,要变为yet放在句末.）
2.spent on(因为,句型sb.spend some time/money （in ) doing sth.或sb.spend some money/time on sth.)
3.spent in writing (理由同2）
4.didn't go,until（not.until...,直到.才.)
5.so,that he couldn't catch（too...to do sth.改成复合句时,要变成so...that...,that 从句还要用否定形式.