are后可加名词,形容词,副词, 代词,动词的现在分词或过去分词。
例句
Are you vegetarian?
你只吃素食吗？
Sales are booming.
销售量在激增。
Are you aware these notes are counterfeit?
你觉察到这些钞票是伪造的吗？
Are you ticklish?
你怕痒吗？
We are very sad to hear that you are leaving.
听说你要走了，我们十分难过。
Here are two records that are bubbling under.
这两张唱片将会走红。
