洛阳学现在完成时(四)
用法
(1)现在完成时用来表示现在之前已发生过或完成的动作或状态,但其结果却和现在有联系,也就是说,动作或状态发生在过去但它的影响现在还存在.
I have spent all of my money.(含义是:现在我没有钱花了.)
Jane has laid the table.(含义是:现在桌子已经摆好了.)
Michael has been ill.(含义是:现在仍然很虚弱)
He has returned from abroad. (含义是:现在已在此地)
(2)现在完成时可以用来表示发生在过去某一时刻的,持续到现在的动作(用行为动词表示)或状态(be动词表示)常与for(+时间段),since(+时间点或过去时的句子)连用.
Mary has been ill for three days.
I have lived here since 1998.
注(超重要):瞬间动词(buy,die,join,lose……)不能直接与for since 连用。要改变动词
come-be
go out-be out
finish-be over
open-be open
die-be dead
………………