英语问题。动词什么时侯要加ing。什么时候是todo.

答案如图所示

take sb doing sth：主要用于娱乐、休闲、购物等方面，所以其中的 doing 通常是 swimming, skating, fishing, camping, walking, shopping 等。
take sb to do sth 不定式带有较强的目的性，看作目的状语。
eg.My Dad took me to watch my first football match. 爸爸带我去看了我平生第一场足球比赛。

英文动词和中文动词有很大的不同，英文的动词有时态，及物，不及物，三单，使役动词，系动词等几十种变化形式。
中文只有一种形式，就是"动词"，所有的情况下都是"动词原形"，不会变化。

一般加ing是"现在进行时态"，to do 是动词的"非谓语形式""，一般做定语。

并不是所有动词都可加ing/to do作宾语。like.
try . remember等可两者都可，但mind. enjoy. finish等只接ing.

有时候to是动词不定式的符号，同时它也是一个介词，当它是动词不定式符号的时候用动词原形，当它是介词的时候，用ing形式

做谓语时动词加ing前面必须加上be动词,形成be+动词ing(现在分词)作句子谓语，构成进行时态句子。

例如:

He is reading a book now.他正在看书.

He was watching TV when his mother came in.他妈妈进来时，他正在看电视。

They've been waiting for you for three hours.他们等你三个小时了.

1动词加ing做非谓语情况

1、动词作介词的宾语要加ing(动名词)

I'm looking forward to seeing you again.我期盼着再次见到你.

The boy is so excited about hearing from his mother.男孩为收到他妈妈的来信很兴奋。

2、部分动词用动词做宾语。做宾语的动词要加ing(动名词)

I Practising speaking English Every day.我每天练习说英语.

Could you mind opening the door?你介意开门吗？

I have finished reading three books.我已经看完三本书.

The old man Enjoys living in the country.这老人喜欢住在农村.

3、一些固定句式后面要加动词ing(现在分词)

We have fun Playing in the park on Sunday.

Most students have problems speaking English.

4、动词修饰名词做后置定语时，要加ing(现在分成)

There is a boy Crying over there.

I felt something moving in the house.

I heard someone singing in the next room.

5、动词做主语和表语时，动词要加ing(动名词)

Swimming is very popular in summer.

His job is teaching English. 综上所述，动词在以上六种情况需要加ing！