请问这个句子中all I have to do is learn english.is跟learn不是都是动词吗?为什么

来源：学生作业帮编辑：作业帮分类：英语作业时间：2024/04/28 04:35:16

请问这个句子中all I have to do is learn english.is跟learn不是都是动词吗?为什么learn不用加ing啊?

1.此句存在省略现象,即：
All I have to do is learn English.
= All I have to do is to learn English.
英语语法规定：如果用不定式短语做表语,且前面已有行为动词do或do的各种变化形式如did/does/done时,则该不定式短语的to一般省略.
再如：What I can do now is (to) wait.
2.如果用learning,其实也是可以的,即动名词短语也可以做表语.
只不过,表语所表示的动作如果尚未发生或表示的是某次具体的动作时(楼主多给的例句为第二种情况),此时一般只用不定式短语做表语,比较少用动名词短语做表语.
再如：My dream is to be a teacher.
而不讲：My dream is being a teacher.

请问这个句子中all I have to do is learn english.is跟learn不是都是动词吗?为什么 All I have to do is learn English.这句里learn是动词,前面干吗用is all i have to do is learn english.为什么不是all i have to do is l All I have to do is learn English. 中的learn是不定式吗? all i have to do is learn english分析一下这个句子结构,是名词性从句嘛? All I have to do is learn English.中的learn用法对吗 All I have to do is learn English 是对的吗 All I have to do is learn English,看了有些答案说是All I have to do i All I have to do is learn English."all"可以换成"what"吗?换过有区别吗? All I have to do is learn English.这句话语法对吗? all i have to do is learn english是否错了? What I have to do is learn English