用do, does, did强调一般时态的谓语动词；用it is…that…强调谓语之外的各种句子成分。
It was not until she took off her glasses that her father recognized her.
Only in this way can we learn English well.
With the noise going on, I couldn't go on studying.
Located at the southwest corner of our school, the botanical garden has an area of 1000 square metres.
Above all, something must be done to stop polluting.
There're many kinds of tea in China, of which Longjing Tea is famous all over the world.
7. “数词+名词”改用“as many as+数词+名词”
A great number of buildings were destroyed, leaving as many as 10,000,000 people homeless.
What surprised me greatly was to find she was such a fine swimmer.
如 I guess, I think, I believe, however, in my opinion, in other words, that is to say, generally speaking, believe it or not, to tell you the truth, to be honest, as we know, what's worse等。
I didn't realize the importance of cooperation until I was chosen monitor of my class in my senior middle school. (用强调句)
We can live a happy life only in this way. (用倒装句)
I often feel anxious. The final exam is around the corner. (用with结构)
When I finished reading your letter, I was much moved. (用非谓语动词)
They carried out a survey among 260 students. (用被动语态)
They were faced with many difficulties. They didn't lose heart. (用非谓语动词)
I couldn't fall asleep at night. I lost interest in everything. (用插入语)
He worked very hard. He made great progress in his study. (改为复合句)
He offered me a piece of advice that I should cheer up and start all over again. (用what引导的主语从句)
He began playing the computer the moment he got home. This took up much of his time.（用定语从句）
It was not until I was chosen monitor of my class in my senior middle school that I realized the importance of cooperation.
Only in this way can we live a happy life.
I often feel anxious with the final exam around the corner.
Finishing reading your letter, I was much moved.
A survey was carried out among 260 students.
Faced with many difficulties, they didn't lose heart．
I couldn't fall asleep at night. What was worse, I lost interest in everything.
He worked so hard that he made great progress in his study.
What he offered me was a piece of advice that I should cheer up and start all over again.
He began playing the computer the moment he got home, which took up much of his time.