英语厉害的就速速戳进来了!一般疑问句,反问句,提问1 David is my classmate.改成一般疑问句,反问句,并对David提问.2 He is twelve years old.改成一般疑问句,反问句,并对twelve提问.3 We often help each other.改

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英语厉害的就速速戳进来了!一般疑问句,反问句,提问1 David is my classmate.改成一般疑问句,反问句,并对David提问.2 He is twelve years old.改成一般疑问句,反问句,并对twelve提问.3 We often help each other.改
英语厉害的就速速戳进来了!一般疑问句,反问句,提问
1 David is my classmate.改成一般疑问句,反问句,并对David提问.
2 He is twelve years old.改成一般疑问句,反问句,并对twelve提问.
3 We often help each other.改成一般疑问句,反问句,并对We提问.

英语厉害的就速速戳进来了!一般疑问句,反问句,提问1 David is my classmate.改成一般疑问句,反问句,并对David提问.2 He is twelve years old.改成一般疑问句,反问句,并对twelve提问.3 We often help each other.改
isn;t David?  Is David your classmate?  Who is your classmate?
isn;t he?    Is he twelve years old?  How old is he?
don;t we?  Do you often help each other?  Who often hele each other?
前面否定,后面肯定.前面肯定后面有否定.

1、Is david my classmate?
2 Is he twelve years old?
3 Do we often help each other?
采纳

Is david my classmate?
Is he twelve years old?
Do you ofren help each other?