甚麼是verb to be?

Verb to be ----是一些特別動詞, 它們有很多特別用法。
Verb to be-----是 is, am , are , was , were, be, being, been
Verb to be----有時可解作「是」, 「有」, 「在」。
Verb to be 的用法；
1) 現在式 Simple present tense 的用法：
例句: I am a boy. He is a man. She is a woman. You are a doctor.
例句: They are students. We are children. (意思是我們是兒童)
例句: There are 40 chairs in the classroom.
例句: Is there a God ? (意思是有神嗎?)

2) 過去式 Simple past tense 的用法：
例句: I was happy. He was happy. She was happy. You were happy.
例句: They were sad. We were sad .

3) 現在進行式 Present Continuous tense:
例句: I am playing football. ( 附助 playing 顯示正在進行這動作).
例句: The students are being punished. ( 被動形式+正在進行,表示
學生正在受罸。)

4) 過去進行式 Past Continuous tense:
例句: He was singing , when his mother entered the room.
例句: The students were being punished when Miss Chan entered the classroom.

5) 現在完成式 Present perfect tense:
例句: You have never been London.

6) 將來式 Simple future tense:
例句: I shall be a good singer after being trained.

***單數用 is, was, ***雙數用 are, were *** 我( I ) 現在式時用am

verb 就是动词。
to be是动词一种。

但verb to be 有分你我他。
I am, you are, he is, we are, you are, they are
am, are, is 就是verb to be的你我他的不同形式。

Verb To Be即是 "Is", "Am", "Are", "Was" & "Were".