is your grandmother a history teacher ? she------ A used to B used to be

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isyourgrandmotherahistoryteacher?she------AusedtoBusedtobeisyourgrandmotherahistoryteacher?she------

is your grandmother a history teacher ? she------ A used to B used to be
is your grandmother a history teacher ? she------ A used to B used to be

is your grandmother a history teacher ? she------ A used to B used to be
b.used to be (曾经是.)

B. (used to do...过去经常做……)

B used to be
used to表示过去常常做某事.
例句: I used to play football after school.过去我常常在放学后踢球.
be used to do的意思是被用来做某事;be used to doing的意思是习惯于做某事.
be used to 被用来做
used to + do:"过去常常"表示过去习惯性的...

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B used to be
used to表示过去常常做某事.
例句: I used to play football after school.过去我常常在放学后踢球.
be used to do的意思是被用来做某事;be used to doing的意思是习惯于做某事.
be used to 被用来做
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)
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