How do you say

I haven’t seen him for three months – how is he?

..in Chinese?

我们已经三个月没见了,他最近怎么样?

wǒ men yǐ jīng sān gè yuè méi jiàn le , tā zuì jìn zěn me yàng ?

How do you say "The nice weather will last for a week." in Chinese?