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

21.can not but / can not help but替换have to do

I could not but (had to) go home.

22.more often than not替换usually

More often than not (Usually), the meaning of many words can be easily guessed.

23.lest替换so that /in order that

I wrote down his telephone number so that I would not forget it. →

I wrote down his telephone number lest I (should) forget it.

24.be long for sth. / be long to do sth. 替换want to do sth./wish for

I want to see you very much. →

I am long to see you.

25.be caught up in/be crazy about/be absorbed in/be addicted to替换be interested in

He is caught up in ( very interested in ) collecting stamps.

26.more than替换very

① I’m very glad to learn that you are coming in September. →

I’m more than glad to learn that you are coming in September. ( NMET 2003 )

② If there is anything I can do for you, I would be more than glad to help.(2004全国卷)

27.perfect (ly) 替换good/ very well

He speaks perfect ( good ) English./ He speaks English perfectly ( very well ).

28.do sb a/the favor 替换help

Would you please do me the favor ( help me ) to turn down the radio?

29.the other day替换a few days ago

The other day my brother and I went to the cinema by bicycle. ( NMET 1997 )

30.in the course of替换during

In the course of (During) the mountain-climbing, please help each other and pay special attention to your safety.

31.the majority of替换most

The majority of (Most of ) the interviewees prefer watching TV at home to going to the cinema.

32.consist of替换be made up of

Our class consists of ( is made up of ) 50 students.

33.be worn out替换 be tired / broken

① After five hours’ non-stop work, we were all worn out (tired).

② My shoes are worn out (broken). Please buy me a new pair.

34.become of替换 happen

What do think has become of ( happened to ) him ?

35.attend to替换look after

36.on condition that替换as long as

37.nevertheless替换however

38.express one’s satisfaction with替换be satisfied with