惯用单句

好的。

OK.

当然愿意啦。

You bet，

就这么定了。

That's sattle then.

太好了，我很愿意。

Great! I 'd love that.

听上去不错,

That sounds great.

能和你一起进餐真好

It will be very nice to have dinner with you.

我非常愿意接受你的邀请，

I 'd very much like you to accept your invitation.

真是个好主意，

That's a great idea.

我们非常高兴参加你们的婚礼,

We be the light to atend your wedding.

我们非常荣幸能参加这个宴会。

It will give us great plesure to attend the banken.

情景对话
Frank:Hi,Alice, what are you doing this sunday,

Alice:Nothing really, why, what 's up?

Frank:If you are free, maybe you can get having for my birthday party,it will be fun

Alice:Sounds great,i 'd very much like having something thanks,when?

Frank:Around six pm.

Alice:Do you need help setting up or anything? I don't mind. I like to do that kind of thing. It's fun and I have a good eye for decorating.

Frank:No. thank you.I can handle it, but thanks for the offer,

Alice:Ok, I will see you again,

Frank:Great.I have a good day , thanks again for the offer.