used to / be used to / be used for
I used to swim. / I am used to swimming. / It is used for cutting.
點「複製」把詞條和說明一起拿走。
說明
used to do = 過去常常（現在不做了）；be used to doing = 習慣於；be used to do = 被用來做。三個結構意思完全不同，是高頻易錯點。
同類條目
- 主謂一致：就近原則 —— Either you or he is right.
- 現在完成時 vs 一般過去時 —— I have lived here for 5 years. / I lived there in 2010.
- 定語從句：that 與 which —— The book that/which I bought is good.
- 虛擬語氣：if 條件句 —— If I were you, I would take it.
- 非謂語：doing 與 to do —— I enjoy reading. / I want to go.
- 倒裝：否定詞提前 —— Never have I seen such a thing.
- 比較級：as ... as 與 than —— He is as tall as I am. / He is taller than I am.
- 情態動詞表推測 —— It must be true. / It can't be true.
全部學習資料#67