It has been...(一段時(shí)間)+ since
編輯時(shí)間: 2016-12-24 12:00:59   來(lái)源:速來(lái)學(xué)整理sulaixue.com
It has been...(一段時(shí)間)+ since
It has been...(一段時(shí)間)+ since引導(dǎo)的從句/自從……以來(lái)已經(jīng)……了
該句型中since引導(dǎo)的時(shí)間狀語(yǔ)從句常用一般過(guò)去時(shí)。例如:
It's twenty years since he moved here.
他自從搬到這里已經(jīng)20年了。
It has been six years since he married Mary.
他和瑪麗結(jié)婚已經(jīng)六年了。
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