大师作文网have,have got,have to的否定形式一共有几种?
来源：学生作业帮 编辑：大师作文网作业帮 分类：英语作业 时间：2024/11/11 00:56:29
have,have got,have to的否定形式一共有几种?
have既可作实义动词“有”,也可作助动词,如have been,have gone,have done,还可做情态动词,have to,不同用法的陈述句变否定句、疑问句,都有哪些变化?规则是什么?
have既可作实义动词“有”,也可作助动词,如have been,have gone,have done,还可做情态动词,have to,不同用法的陈述句变否定句、疑问句,都有哪些变化?规则是什么?
做助动词:
疑问句：把have提前,如Have you been there before?Have you done your homework?
否定句,变have为haven't .
情态动词
疑问句：用Do提问,如Do you have to do this right now?Does Tom have to go to school?
否定句：加don't,如I don't have to do it now.Tom doesn't have to go to school today.
做“有”讲的时候,和一般动词用法相同.
我知道的就是这些,
疑问句：把have提前,如Have you been there before?Have you done your homework?
否定句,变have为haven't .
情态动词
疑问句：用Do提问,如Do you have to do this right now?Does Tom have to go to school?
否定句：加don't,如I don't have to do it now.Tom doesn't have to go to school today.
做“有”讲的时候,和一般动词用法相同.
我知道的就是这些,