11.3 used to/be used to
used to+do:“过去常常”表示过去习惯性的动作或状态,但如今已不存在。
Mother used not to be so forgetful.
Scarf used to take a walk.(过去常常散步)
be used to+doing:对……已感到习惯,习惯于,to是介词,后需加名词或动名词。
He is used to a vegetarian diet.
Scarf is used to taking a walk.(现在习惯于散步)
典型例题
—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.本句虽没有明确的时间状语,但从语意上看出,在听的时候没有听懂这个动作发生在过去,因此应用过去时。