3、省略作宾语的不定式短语,只保留to。
e.g.
---- Are you going there? ----
I’d like to (go there).
He
did not give me the chance, though he had promised to (give me the chance).
注意:如果该宾语是be动词或完成时态,则须在to之后加上be或have。
e.g.
---- Are you an engineer? ----
No, but I want to be.
----
He hasn’t finished the task yet. ----
Well, he ought to have.