百度作业网助动词和系动词的区别
来源：学生作业帮 编辑：百度作业网作业帮 分类：英语作业 时间：2024/05/21 17:29:37
DO Does 和 am is are怎么区别使用
解题思路： 动词单复数的应用，应多加记忆、比较。
解题过程：
当主语是第三人称单数时（he ,she ,lucy ....)用does 或is, am 用于第一人称单数，do ,are 用于第一人称复数、第二人称及第三人称复数。
在一般现在时中，谓语动词是实义动词变一般疑问句时，需要在句首加do或does且谓语动词要变原型，谓语动词是系动词（am , is ,are )时，只需要把系动词提到句首即可变为一般疑问句。
例如：He does his homework every evening.
Does he do his homework every evening?
They like learning English .
Do they like learning English ?
I am a student.
They are some teachers.
Are they any teachers ?
We are good friends.
Are you good friends ?
Lucy is a good girl .
Is Lucy a good girl ?
最终答案：略
解题过程：
当主语是第三人称单数时（he ,she ,lucy ....)用does 或is, am 用于第一人称单数，do ,are 用于第一人称复数、第二人称及第三人称复数。
在一般现在时中，谓语动词是实义动词变一般疑问句时，需要在句首加do或does且谓语动词要变原型，谓语动词是系动词（am , is ,are )时，只需要把系动词提到句首即可变为一般疑问句。
例如：He does his homework every evening.
Does he do his homework every evening?
They like learning English .
Do they like learning English ?
I am a student.
They are some teachers.
Are they any teachers ?
We are good friends.
Are you good friends ?
Lucy is a good girl .
Is Lucy a good girl ?
最终答案：略