由how,long,for,since引导的时间状语中,句子动词必须为

由how,long,for,since引导的时间状语中,句子动词必须为 for、since、how long 有何共同用法 是不是when.现在完成时.since.how long 现在完成时 .for. (since/ for)-- how long have you benn here?(since/ for)-- how long have you benn here? --__(since/ for) vhalf past three.选择哪个?为什么? since when ,how long 区别 how long have you lived shenzhen?tenyears A in；FOr B in；Since C at,For D on,since how long引导的问句一定要用for + 一段时间、since + 时间点或since引导的时间状语从句来答吗? How long have you studied English in XXXXXX English School?用 since 回答：---------------------------------------------.用 for 回答：---------------------------------------------. -How long have you live here?-____ 1997 A.Since B.In C.For D.From ----Tom told me once he had a fall and broke his arm.---- _____was that? A Since when B How long ago C For when D For how long The use about the word since.How long is it since you lived in shanghai?,is it as same as this sentence How long is it since you left shanghai? .Thanks for your help. How long应该用什么来回答?For 还是 since是只能for用吗?还是两者都能用since是加一个时间点, How long have you been studying English?答语 .三种,一个是for 一个是since （两种）. ( )How long has your faher been a worker?A.In 1990 B.for 1990 C.since1990 D.since 20 years How long have you been playing the piano?_______是填Since five years ago还是for five years how long have you been _Beijing-Opera?-for ten years.-_did you _performing -since i was five 岁 How long have studied in China?----_____more than two years A For B In C On D Since how long have you prepared for the art festival?A since April B in AprilC before April D last April