Your sister is often heard_to sing___(sing) English songs in the afternoon.
hear sb.do 變被動,要加to
One of the cleaners _was removing____(remove) the snow from 5 to 7 yesterday morning.
昨天5點到7點是過去進行的時間狀語
The boy is very happy because all the newspapers_have beensold___(sell)out already.
aleady已經(jīng),是現(xiàn)在完成的時間狀語
There _are going to be____(be)two football matches in your school tomorrow ,are there?
將來時,而且后面反義疑問句用are,所以前面用be going to
How many magazines can _be borrowed__(borrow) in your library every week?
情態(tài)動詞的被動語態(tài)
John_was heard____(hear)to go upstairs two hours ago.被動語態(tài)
Who _saved__(save) her father?He _was saved___(save)by that policeman.過去時被動語態(tài)
Mooncakes _are made___(make)by his mother every year.一般現(xiàn)在時的被動語態(tài)
The boy _is made___(make)_to stay___(stay)at home.一般現(xiàn)在時的被動語態(tài)
The computers in that shop __sell___(sell)well.sell與well連用,用主動語態(tài)表示i被動意義
They should _be helped___(help) when they are sick.情態(tài)動詞的被動語態(tài)
不明白,