have has had is are was were的用法

Question

如题所述

Answer 1

have 常见于一般现在时，第一人称单数和复数，第二人称单数和复数，第三人称复数形式。
eg. I have an apple.
has 一般现在时，第三人称单数。
She has an apple.
had 过去式，第一，二，三人称单数和复数都可以用。
I had an apple.
is 一般现在时，第三人称单数。
She is an american.
are 第二人称单数和复数，第三人称复数。
You are a Chinese.
was 过去式，第一人称单数和第三人称单数。
She was a doctor.
were 过去式，第一人称复数，第二人称单数和复数，第三人称复数。
They were students.
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Answer 2

这里一共有两组不同的词
have has had
和 is are was were

have是‘有的’意思，has是单数人称形式，had是过去式
I have a nice bag
He has a nice bag
I had a surgery

are 是‘是’的意思 is 是单数人称称形式，was是单数人称的过去式，were是复数人称的过去式
They are friends
He is a strong person
He was very mean to his classmates
They were chatting together本回答被提问者和网友采纳