am is are的后面加什么意思

is，am，are属于be动词，意思是是。后面跟名词、形容词或动词。

例句

Although it is tasty, crab is very filling.

螃蟹虽然好吃，但很容易让人饱。

My hair is very fine. Yours is much thicker.

我的头发很稀。你的头发密多了。

Luckily, I am a good swimmer.

幸好我是个游泳好手。

I must admit I am impressed.

我得承认我很佩服。

Hearts are trumps.

红桃牌是王牌。

Clubs are trumps.

梅花是主牌。

Certain courses are compulsory, others are optional.

某些课程是必修的`，其他是选修的。