（通常是物） （动名词的主动形式） ????????????????= + want need require (deserve)
主语 （需要） + to be done （不定式的被动形式） ????????????????
The radio wants(needs, requires)repairing.
=The radio wants(needs, requires)to be repired. 这台收音机需要修理了。
The babies want(need, require)to be examined. 这些婴儿们需要体检了。
The sick woman needs(wants, requires)looking after.
=The sick woman needs(wants, requires) to be lookedafter. 这位病妇女需要照顾。 b．主语+be worth doing = + be worthy + to be done( )
主语 ?????of being done △△
The book is (well)worth reading again. 注意
此句型中用 well 修饰 worth，而不用 very，同时 reading 后面不能 跟 it，因为 reading 的逻辑主语就是句子的主语 The book，不能再重复 出现。
=The book is worthy to be read. =The book is worthy of being read. 这本书非常（很）值得再读一遍。 The piano is well worth buying. =The piano is worthy to be bought. =The piano is worthy of being bought. 这架钢琴买得很值得（值得一买）。
These honest men are worth respecting and depending on.
=These honest men are worthy to be respected and depended on. =These honest men are worthy of being respected and being depended on.
这些诚实的人值得尊敬和信赖。 Practice 实力测验 一．选择填空
1. Look at that _____dog.
A． running B． run C． to run
D． beeing reen
2. That's not a new car. It's a _____car. A． using B． used C． use
D． having used
3. Do you have a letter _____in English? A． writing B． written C． to write
D． having been written
4. Who is the girl _____a letter there? A． writing B． written C． to write
D． being written
5． The man ____ a desk is my father. A． making B． made C． to make
D． to have made
6． I want ____ America. A． visit B． to visit C． visiting D． visited
7． Mary finished ____ the book. A． read B． to read C． reading
D． to have read
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