be adj to do是什么意思?
be adj to do的用法涉及到动词不定式的用法,分俩种情况:
1. be +情感类形容词(happy/glad/pleased/nice等)+to do,表达的意思是:高兴做什么事情,动词不定式是原因状语。
举例:
I'm quite happy to wait for you here.
我非常高兴在此等候您。
Lily was very happy to see her wonderful stickers again.
她又一次看见我的贴画莉莉非常高兴。
He was satisfied to win the race.
他对赢得赛跑感到满意。
2. be +修饰事情的形容词(easy/difficult/hard/challenging等)+to do,表达的意思是:什么事情很容易/难做。前面有形式主语it时,to do是真正的主语;前面主语是物的时候,to do是主语补足语。
举例:
These cakes are very quick and easy to make. (主语补足语)
这些糕饼做起来又快又简单。
The shower is easy to install. (主语补足语)
淋浴器易于安装。
It is important to get something down on paper. (真正主语)
重要的是要把一些事情写在纸上。