I have just received a letter from my brother. 对划线部分提问。
What have you just recevied from your brother ？
What have you just recevied a letter your brother ？
Have you just received a letter from my brother?
I have just received a letter from my brother. 该句的助词是？
He is in Australia.对划线部分提问。
Is he in Australia？
Where is he?
Who is he ?
He has been there for six months. 对划线部分提问。
Has he been there for six months?
How long has he been there for six months?
How long has he been there ?
I went to the theater last week. 变为一般疑问句。
Went you go to the theater last week?
Did you go to the theater last week?
Did you went to the theater last week?
在 I love you 句子结构中 who、what属于什么成分？
在 I love you 句子结构中 when、where属于什么成分？
