13.contribute to替换 be helpful/useful

Plenty of memory work is undoubtedly helpful to English study. →

Plenty of memory work will undoubtedly contribute to English study.

14.round the corner 替换 coming soon/ nearby

① The summer vacation is round the corner ( coming). Do you have any plans?

② Li Ming studies in a school round the corner (nearby).

15.come to light替换discover

The family were so pleased when they discovered the lost jewels. →

The family were so pleased when the lost jewels came to light.

16.have a ball替换have a good time/ enjoy oneself

After visiting the workshop, we went back to school. Every one of us had a ball ( had a good time ).

17.come up with替换think of

Jack is very clever. He often comes up with ( thinks of ) new ideas.

18.set aside替换save

Some students think that they should set aside some of their pocket money for books. (2004天津卷)

19.be of + n. 替换adj.

The products are of high quality (very good ) and are sold everywhere in China.

20.refer to 替换talk about/of, mention

The professor you referred to (talked about ) is very famous.