现在完成时中非延续性动词（瞬间动词）与延续性动词的转换
现在完成时中非延续性动词（瞬间动词）与延续性动词的转换leave → be away离开;borrow → keep借;buy → have买;
begin/start → be on开始/上演;die → be dead;
finish ／end ／stop→ be over结束/完成
join → be in+组织机构或be a member of+组织机构；
open/clo sth → keep sth open/clod；fall ill → be ill；get up → be up；catch ／get a cold → have a cold感冒；come here → be here；
go there → be there；become → be成为；come back → be back；
fall asleep → be asleep睡着；get to/ arrive/reach → be (in)；
leave → be away from；get to know → know；go (get) out → be out；put on → wear；cat
ch a cold →have a cold; go to school → be in school ／be a student上学; go abroad → be abroad去国外;
marry → be married（to）结婚; wake up → be awake 醒;
make friends with → be friends with成为/交朋友;
lo → be lost ／be missing ／be gone 丢失; lo one's job ／
work → be out of work ／a job
请看例句1.The old man died 4 years ago.
→ The old man has been dead for 4 years.
→ It is 4 years since the old man died.
→ Four years has pasd since the old man died.
请看例句2.He joined the Party 2 years ago.
→ He has been in the Party for 2 years.
→He has been a Party member for 2 years.
请看例句3. He joined the army 5 years ago.
→ He has been in the army for 5 years.
→ He has rved in the army for 5 years.
→He has been a soldier for 5 years.
请看例句4.I bought the book 5 days ago.
→ I have had the book for 5 days.
