■英语中瞬间动词不能与“段”时间状语连用，表达时应将其替换为状态动词或延续性动词。如：
(1) I have borrowed the book for two weeks. (误)
正：I have kept the book for two weeks.
析：borrow为瞬间动词。此处要使用延续性动词keep。
(2) My brother has joined the Army for more than two years. (误)
正：My brother has been in the Army for more than two years.
或：My brother joined the Army more than two years ago.
(3) Henry lent me a book and he told me that I could borrow it for a week. (误)
正：Henry lent me a book and he told me that I could keep it for a week.
■瞬间动词与till或until引导的时间状语从句或构成的短语连用时，应使用否定形式，否则应使用状态动词或延续性动词。如：
(1) He went to bed until eleven o’clock. (误)
正：He didn’t go to bed until eleven o’clock.
(2) He got married until he was thirty years old. (误)
正：He didn’t get married until he was thirty years old.
或：He stayed single until he was thirty years old. (stay为状态动词)
(3) He fell asleep until 9 o’clock the next morning. (误)
正：He slept until 9 o’clock the next morning.
■非延续性动词不能用于由从属连词 while引导的时间状语从句中。如：
While I came into the classroom，Mary was reading. (误)
正：When I came into the classroom，Mary was reading.
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