??? 情景例句
He never speaks unless he is spoken to.
除非別人先對他開口，他從不先開口。
Where have you been all this time?
這段時(shí)間你跑到哪里去了？
Don't forget to give her some food and change her water, will you?
請不要忘記給她一些食物和換水，你不會忘記吧？