延续性与非延续性动词的转换只能换单词。
比如：
leave → be away离开;
borrow → keep借;
buy → have买;
begin/start → be on开始/上演;
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；
catch ／get a cold → have a cold感冒；
become → be成为；
come back → be back；
fall asleep → be asleep睡着；
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;
lose → be lost ／be missing ／be gone 丢失;
lose one's job ／work → be out of work ／a job等。
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 passed since the old man died.
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.
3. He joined the army 5 years ago.
→ He has been in the army for 5 years. → He has served in the army for 5 years. →He has been a soldier for 5 years.
4. I bought the book 5 days ago.
→ I have had the book for 5 days.