简单的几个英语问题

2024-12-05 03:33:06
推荐回答(2个)
回答1:

1. not 可以直接放在am, is, are, was, were 等be的各种形式后面;
2. don't 用在行为动词的否定形式中。行为动词,顾名思义是表示行为动作的动词,与表示状态的be相对。如
I don't like milk.
We don't go to school on Sunday.
当然,如果主语是he, she, it时,用doesn't:
He doesn't like milk.

3. has 用于第三人称单数(he, she, it), 其余的用have。
I have a good book.
She has a nice pen.

回答2:

not 前一定有动词。don't=do not 可归为动词+not。
如:have not,must not,need not,is(are) not 等,一般都是缩写形式的(is not=isn't等)。

我想一定是人称的关系,has肯定用于第三人称单数(he,she,it),have肯定用于第一人称、第二人称及第三人称复数(I,we,you,they)。除非疑问句或否定句中前面已有助动词,那就用have了。