you'll have to pay a deposit of 60 dallars to reserve the room,have 起什么作用.to 是不定式符号to 是不定式符号是吗.

问题描述:

you'll have to pay a deposit of 60 dallars to reserve the room,have 起什么作用.to 是不定式符号
to 是不定式符号是吗.

have to 不得不,是一个词组,

have to词组:不得不