My wife and mother-in-law are arriving next week.

我妻子和岳母下周到。

A: When anyone from my familiy comes to Beijing, I'm the tour guide!

A: 当我的家里人来北京时，我就是导游！

B: I suppose that's only natural. You know the city well.

B: 我想这很自然。你非常熟悉北京。

A: Yes. My wife is back in London right now. She's bringing her mother with her to Beijing for a visit.

A: 是的。我的妻子现在回伦敦了。她将要带她的妈妈一起来北京。

B: When are they coming?

B: 她们什么时候到？

A: My wife and my mother-in-law are arriving next week.

A: 我妻子和岳母下周到。

B: Well, enjoy yourself till then. You'll be busy when your mother-in-law is here.

B: 那么，在她们到来之前好好享受一下。你岳母来的时候你会非常忙。

Notes 注释

1. when you gain relative through marriage, they are called in-laws, e. g. your wife's mother is your mother-in-law. Your brother's wife is your sister-in-law. Also father-in-law and brother-in-law, son-in-law, daughter-in-law.
通过婚姻获得的亲戚称作in-laws (姻亲)。例如，你妻子的妈妈是你的mother-in-law (岳母)。你兄弟的妻子是你的sister-in-law (嫂子、弟妹)。还有father-in-law （岳父、公公）和 brother-in-law (姐夫、小舅子), son-in-law (女婿)和daughter-in-law (儿媳).