be动词后的宾语to do和doing都行吗

来源：学生作业帮编辑：作业帮分类：英语作业时间：2024/05/17 05:29:47

be动词后的宾语to do和doing都行吗
为什么有时用to do有时用doing但是我见过的大多数都是doing 有什么区别吗?
还有一个问题 If you tell a friend you are going to their house for dinner为什么用theirZ不用his or her?【课本原句】
还有这个句子If someone invites you to meet them at 4:00也是一样的情况，也是课本原句。

1.be 动词后面的成分叫 “标语”,不叫宾语.doing和to do都可以跟be后面,做表语.
My job is cleaning the window./My job is to clean the window.都对
2.这句话用his or her是可以的,用their也行,前面的a friend 是泛指,并非指一个人,而是指一类人,所以用their 完全可以
3.用代词来指代someone,anyone之类的,本来就是用they最好.
不懂追问.

be动词后的宾语to do和doing都行吗只跟doing作宾语的动词和只跟to do作宾语的动词初中动词后加doing和to do的形式用used to do,be used to do,be used to doing和括号中动词的适当形式填空用 used to do ,be used to do ,be used to doing 和括号内动词的适当形式填空. 动词后即可以接to do又可以接doing的单词都有什么? 怎么区分谓语动词,to do doing done 和to be doing to be done to have do love to 后的动词是do 还是doing 归类列举后接doing、to do 的动词 be careful doing和be careful to do的区别? be easy to do和 be easy doing 的区别 be going to do 和be doing用法的区别?