他们是

• they're

例句

1. 他们是群老奸巨滑的政客。
   They are crafty politicians.
2. 我注意到他们在乡村买了所房子。我猜想他们是要与别人比阔气哩。
   I see that they have bought a house in the country. I suppose they're trying to keep up with the Joneses.
3. 认真搜查所有的犯人，看他们是否藏有武器。
   Go over all the prisoners to see that they're not hiding any weapons.
4. 他们是酒友。
   They're drinking companions.
5. 他们是一群笨蛋。
   They're a load of morons.