小編給大家?guī)砉灿⒄Z考試二級口語輔導練習(18)，希望對大家有所幫助。下面就請大家跟隨小編的腳步一起來看看吧。希望各位備考公共英語二級的小伙伴們都能順利上岸~ 比較since和for Since 用來說明動作起始時間，for用來說明動作延續(xù)時間長度。 I have lived here for more than twenty years. I have lived here since I was born…… My aunt has worked in a clinic since 1949. Some new oilfields have been opened up since 1976. I have known Xiao Li since she was a little girl. My brother has been in the Youth League for two years. I have not heard from my uncle for a long time. 注意：并非有for 作為時間狀語的句子都用現(xiàn)在完成時。 I worked here for more than twenty years. (我現(xiàn)在已不在這里工作。) I have worked here for many years. (現(xiàn)在我仍在這里工作。) 小竅門：當現(xiàn)在完成時 一段時間，這一結(jié)構(gòu)中，我們用下面的公式轉(zhuǎn)化，很容易就能排除非延續(xù)動詞在完成時中的誤使。 1)(對) Tom has studied Russian for three years. = Tom began to study Russian three years ago, and is still studying it now.
