formal (hearty /kind )invitation 正式（诚心的/盛情的）邀请
not-to-be-refused invitation 盛情难却的邀请
an inescapable invitation 不能推荐的邀请
offer an invitation 提出邀请
accept (decline) an invitation 接受（谢绝）邀请
a welcoming dinner 欢迎晚宴
get a warm welcome 受到热烈欢迎
Will you give us the pleasure of your company ?你愿意赏脸和我们在一起吗？
How would you like to come to a party tonight ?你来参加今晚的聚会好吗？
Why don't you go biking with us ?干吗不跟我们一起去骑自行车？
How about going to the bar ?去酒吧怎么样？
Why not come to the club with me ?干不跟我们去俱乐部？
How would you like to go shopping tomorrow? 明天你愿意去逛街吗？
I'm looking forward to seeing you at the party .我期待在晚会上见到你。
I came in at /on your invitation .我是应你的邀请进来的。
It's very kind of you to invite me .谢谢你邀请我。
Not really ,thanks all the same .真的去不成了。尽管如此，我还是非常感谢你
I can't manage to keep my appointment with you for Saturday.我无法周六与你约会了。
I'll have an appointment with my friend /so I'm afraid I'll miss the chance to join in your activity .我与朋友有个约会，所以没有机会参加你们的活动了。
I can't You see. I have to work at weekends.我不能。你知道周末我得工作。