英语 · 单词

is

是

释义

• 助动词 · A1

  Used with a singular subject to show identity, a quality, or a state.

  She is an English teacher.

• 助动词 · A1

  Used with 'there' to express that something exists or is located somewhere.

  There is a pen on the desk.

• 助动词 · A1

  Used with a main verb in the -ing form to express an ongoing action, or with a past participle for the passive voice.

  He is reading a book right now.