2013高考英语备考：How long have you had it用法说明

　　How long have you had it?你买了多久了?

　　瞬时动词come/go/leave/start/arrive/buy/die/join/borrow/marry等不能与表示一段时间的状语连用。如how long, for 和 since所表示的时间。

　　①他去世三年了。

　　不能说：He has died for 3 years.

　　而应说：He has been dead for 3 years/He died 3 years ago.

　　It is 3 years since he died.

　　②他参军多久了?

　　不能说：How long has he joined the army?

　　而应说：How long has he been in the army?/How long has he been a soldier?/How long is it since he joined the army?

　　how long/how soon/how far/how often

　　(1)how long 多久。表示一段时间，句中的动词应是延续性的。是对for 或since等所表示的时间状语的提问。

　　—How long have you lived here ?你在这里住多久了?

　　①—For three years.3年了。

　　②—Since 1997.从1997年至今。

　　③—Since I graduated from college.从大学毕业至今。

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