可以開始進(jìn)行備考啦，迎戰(zhàn)考試，奮斗是我們此刻的選擇，相信所有的努力都會被歲月溫柔以待！整理了“2020年12月大學(xué)英語四級語法知識整理”，歡迎閱讀參考！更多相關(guān)訊息請關(guān)注！
【篇一】2020年12月大學(xué)英語四級語法知識整理
用于現(xiàn)在完成時的句型
1)It is the first / second time…. that…結(jié)構(gòu)中的從句部分，用現(xiàn)在完成時。
It is the first time that I have visited the city.
It was the third time that the boy had been late.
2)This is the… that…結(jié)構(gòu)，that 從句要用現(xiàn)在完成時.
This is the best film that I've (ever) seen.
這是我看過的的電影。
This is the first time (that) I've heard him sing. 這是我第一次聽他唱歌。
【篇二】2020年12月大學(xué)英語四級語法知識整理
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(dāng)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.
2) (錯) Harry has got married for six years.
= Harry began to get married six years ago, and is still getting married now.
顯然，第二句不對，它應(yīng)改為 Harry got married six years ago. 或 Harry has been married for six years.
【篇三】2020年12月大學(xué)英語四級語法知識整理
since的四種用法
1) since +過去一個時間點(diǎn) (如具體的年、月、日期、鐘點(diǎn)、1980, last month, half past six)。
I have been here since 1989.
2) since +一段時間+ ago
I have been here since five months ago.
3) since +從句
Great changes have taken place since you left.
Considerable time has elapsed since we have been here.
4) It is +一段時間+ since從句
It is two years since I became a postgraduate student.
【篇一】2020年12月大學(xué)英語四級語法知識整理
用于現(xiàn)在完成時的句型
1)It is the first / second time…. that…結(jié)構(gòu)中的從句部分，用現(xiàn)在完成時。
It is the first time that I have visited the city.
It was the third time that the boy had been late.
2)This is the… that…結(jié)構(gòu)，that 從句要用現(xiàn)在完成時.
This is the best film that I've (ever) seen.
這是我看過的的電影。
This is the first time (that) I've heard him sing. 這是我第一次聽他唱歌。
【篇二】2020年12月大學(xué)英語四級語法知識整理
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(dāng)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.
2) (錯) Harry has got married for six years.
= Harry began to get married six years ago, and is still getting married now.
顯然，第二句不對，它應(yīng)改為 Harry got married six years ago. 或 Harry has been married for six years.
【篇三】2020年12月大學(xué)英語四級語法知識整理
since的四種用法
1) since +過去一個時間點(diǎn) (如具體的年、月、日期、鐘點(diǎn)、1980, last month, half past six)。
I have been here since 1989.
2) since +一段時間+ ago
I have been here since five months ago.
3) since +從句
Great changes have taken place since you left.
Considerable time has elapsed since we have been here.
4) It is +一段時間+ since從句
It is two years since I became a postgraduate student.