预约成功
8. or（或者）
Hurry up， or youll be late.
You may do it yourself， or ask someone else to do it.
He hardly ever goes to the cinema or the theatre.
9. otherwise（否则）
She was in a hurry that morning. Otherwise she would have stopped to talk with you.
Youd better take more exercise， otherwise youll get fat.
10. either …or（或者……或者）
You can come either today or tomorrow.
You may either stay here or go with me.
