I don’t think you have met my father.我想你还没有见过我父亲吧
Allow(let) me introduce Mr Green to you.请允许(或让)我给你介绍一下格林先生
I’m afraid I must be leaving(must be off,have to go) now.恐怕我得走了
I think it’s time for us to leave now.我想我们该走了
It’s time I met Tom(did my homework). I have to go now.我该去见汤姆(或:去做作业了).现在我得走了
I don’t know how I can thank you enough.我不知怎样谢你才好
I don’t knoe what I should have done without your help.没有你的帮助我真不知道怎么办
I wish you good luck(success)!祝你好运(或:成功)
Good journey (to you)!旅途愉快
Have a good trip.旅途愉快
I’m sorry to have(I’m sorry that I have) kept you waiting fou a long time.抱歉让你久等了
Excuse me(for having kept you waiting fou a long time).请原谅(让你久等了)
I’m afraid (that) I’ll be late.恐怕我要迟到了
What a pity!真可惜!真是遗憾
What a shame!真丢脸
It’s a pity that you can’t come.你不能来真是遗憾