, want, require(要求,需要), deserve(应得,值得 ), be worth值得), not bear(经不住 ) +doing主动表被动
The book is worth reading
这本书值得一读
The old building requires repairing
这座古建筑需要修了
These young seedlings will require/need looking after (=need to be looked after) carefully
这些幼苗将需要小心的照管
Your hair wants/needs cutting (needs to be cut)
你的头发该剪了
不定式作定语,放在被修饰词后面,与前面被修饰的名词或代词有动宾关系,又在句子中与另一名词或代词有主谓关系,不定式要用主动表被动含义
I have much work to do
我有许多要做的事情
(与 work 有动宾关系,与I 有主谓关系)Tom is looking for a room to live in
Tom在找一间住的房间
(与 room 有动宾关系,与Tom 有主谓关系)He has a family to support
他要维持一个家庭
(与 family有动宾关系,与he 有主谓关系)3
不定式修饰作表语和宾语补足语的形容词时,结构:主语 +系动词 +形容词 + 不定式; 动词+宾语 +形容词 +不定式
如果形容词是表示难易、利弊等含义,如difficult, easy, comfortable(舒适的 ), convenient(便利的,方便的), hard, cheap, expensive, 等,不定式用主动表被动
The question is difficult to answer