分不清楚句子中 have be do的用法
例如:do you a boy?
are you a boy? 有什麼分別
have/do/is在什麼時候用
另一個問題:句子是否需要全部轉成過去式?
例如:i am playing football 轉成
i was played football 還是i was play football 還是i was playing football