used to 過去常常做某事
be used to 被用來做
used to / be used to （樓上的幾位請注意,be used for才是被用來做什么）
used to + do："過去常常"表示過去習(xí)慣性的動作或狀態(tài),但如今已不存在.
Mother used not to be so forgetful.
Scarf used to take a walk.(過去常常散步)
be used to + doing：對……已感到習(xí)慣,或"習(xí)慣于",to是介詞,后需加名詞或動名詞.
He is used to a vegetarian diet.
Scarf is used to taking a walk.(現(xiàn)在習(xí)慣于散步)
used to / be used to
used to + do："過去常常"表示過去習(xí)慣性的動作或狀態(tài),但如今已不存在.
Mother used not to be so forgetful.
Scarf used to take a walk.(過去常常散步)
be used to + doing：對……已感到習(xí)慣,或"習(xí)慣于",to是介詞,后需加名詞或動名詞.
He is used to a vegetarian diet.
Scarf is used to taking a walk.(現(xiàn)在習(xí)慣于散步)
典型例題
---- Your phone number again?I ___ quite catch it.
---- It's 69568442.
A.didn't B.couldn't C.don't D.can't
答案A.本句雖沒有明確的時間狀語,但從語意上看 出,在聽的時候沒有聽懂這個動作發(fā)生在過去,因此應(yīng)用過去時.