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1、瞬间动词转换成持续性动词瞬间动词用于完成时态不能与一段时间状语连用，须转换成持续性动词。1.用相应的延续性动词替换的有：buy-have borrow-keep put on-wearcatch/get a cold-have a cold come/go/become-be 等。eg. 1.We have had the TV set for 3years. 2.I have kept the book for 2 weeks.2.转换成be+名词的有：join the army-be a soldier join the Party-be a Party membergo to schoo
2、l-be a student 等。eg. 1.He has been a soldier for 5 years.2She has been a student for 2 months.3.转换成be+adj/adv.diebe dead finishbe over begin-be onleave-be away move-be out ofput on-be on open-be open close-be closedfall asleep-be asleep 等。eg. He has been dead for 5 years.4. 转换成be+介词短语go to school-be
3、 in schooljoin the army-be in the army 等。eg. 1.She has been in the army for 2 years. 2.He has been in school for 9 years.5.通过去掉短语中的结束性动词get to know-knowbegin to study-studycome to work-workeg. 1.We have known each other for 10 years. 2.He has study Chinese for 2 years.*瞬间动词完成时的否定式已成为一种可延性状态，因此可以和表示一
4、段的时间状语连用。eg. 1.I havent heard from her for 6 months. 2.I havent bought anything for 2 months.leave - be away, borrow - keep, buy - have, begin/start - be on, die - be dead, finish - be over, join - be in+组织机构, be a member of+组织机构, open sth - keep sth open, fall ill - be ill, get up-be up, come here - be here, go there - be there, become - be, come back - be back, fall asleep - be asleep, get to/ arrive/reach - be (in), leave - be away from, get to know - know, go (get) out be out， put on wear；catch a cold have a cold,get married-be married等。1学习练习#
