首都图书馆收费吗:一道题，高手讲解一下！

worth (后可跟名词，如钱数等或动名词，但要用主动形式
be worth doing sth. "……某事值得被做"
The film is not worth seeing again and again.
worthy：
be worthy of +n. 当名词为抽象名词时表示"……值得……"
sth be worthy to be done
=sth be worthy of being done"某事值得被做"
The question is not worthy to be discussed
=The question is not worthy of being discussed

3. worth-while： be worth-while to do sth "值得做某事"但主语要为It
worth while：
It is worth while doing sth
=It is worth while sb to do sth.

这道题选c
请看

worth 的用法

worth，worthy，worth-while都为adj. 意为"值得"。
1. worth： be worth + n. 当名词为金钱时，表示"…… 值得……"
be worth doing sth. "……某事值得被做"
The question is not worth discussing again and again.

2. worthy：be worthy of +n. 当名词为抽象名词时表示"……值得……"
be worthy to be done "某事值得被做"
The question is not worthy to be discussed againand again.

3. worth-while： be worth-while to do sth "值得做某事"
worth while： It is worth while doing sth
It is worth while sb to do sth.

D是错误的。
be worth doing就是值得被的意思，不用被动。

上面回答得都对。

D

D