英语语法知识what（ ）he（ ）usually（ ）on Sunday?he usually（ ）his homework.look!he（ ）（ ）his homework now.（ ）he（ ）his homework last Sunday?yes,he（ ）.

What does he usually do on Sunday? He usually does his homework! He is doing his homework now. Did he do his homework last Sunday? Yes, he did.

先举个例子吧
I don't know how to say这是个宾语从句，how to say做know的宾语。宾语从句一般是放在动词后面，构成形式：主语+谓语+从句。
I don't know the fact that you said 这是个定语从句， that you said 修饰the fact并做他的定语，构成形式：主语+谓语+宾语+从句 一定要注意，定语从句前必须有个名词或名词词组。
状语不是句子的主要部分，他是修饰补充的，如时间、地点等一般后面都跟有for+...,in+...等。
He cried.主谓
The soup tastes delicious. 主谓宾
He buys her flowers. 主谓宾宾补
He thinks it to be right.主谓宾补
He eats dinner in the hotel last night. 主谓宾状

does,/,do.
dose.
is doing.
Did do.did