《初中語(yǔ)法總結(jié)之since和for》由英語(yǔ)編輯整理,更多請(qǐng)?jiān)L問(wèn):https://www.liuxue86.com/english/。本內(nèi)容整理時(shí)間為05月12日，如有任何問(wèn)題請(qǐng)聯(lián)系我們。
Since 用來(lái)說(shuō)明動(dòng)作起始時(shí)間，for用來(lái)說(shuō)明動(dòng)作延續(xù)時(shí)間長(zhǎng)度。
例如：I have lived here for more than twenty years.我住在這兒二十多年了。
I have lived here since I was born. 我從出生起就住在這兒了。
注意：并非有for 作為時(shí)間狀語(yǔ)的句子都用現(xiàn)在完成時(shí)。
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。）
注意：用句型轉(zhuǎn)換的方法，很容易排除非延續(xù)動(dòng)詞在有for/since結(jié)構(gòu)的完成時(shí)中的誤用。
1）（對(duì)） Tom has studied Russian for three years. = Tom began to study Russian three years ago, and is still studying it now.
2）（錯(cuò)） 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(duì)，它應(yīng)改為 Harry got married six years ago. 或 Harry has been married for six years.
since的四種用法
1） since +過(guò)去一個(gè)時(shí)間點(diǎn)（如具體的年、月、日期、鐘點(diǎn)、1980, last month, half past six）。例如：I have been here since 1989. 1989起，我一直在這兒。
2） since +一段時(shí)間+ ago。例如：I have been here since five months ago. 我在這兒，已經(jīng)有五個(gè)月了。
3） since +從句。例如：Great changes have taken place since you left. 你走后，變化可大了。 Great changes have taken place since we were here. 我們走后，變化可大了。
4） It is +一段時(shí)間+ since從句。例如：It is two years since I became a postgraduate student. 我考上研究生有兩年了。
《初中語(yǔ)法總結(jié)之since和for》由英語(yǔ)編輯整理,更多請(qǐng)?jiān)L問(wèn):https://www.liuxue86.com/english/
Since 用來(lái)說(shuō)明動(dòng)作起始時(shí)間，for用來(lái)說(shuō)明動(dòng)作延續(xù)時(shí)間長(zhǎng)度。
例如：I have lived here for more than twenty years.我住在這兒二十多年了。
I have lived here since I was born. 我從出生起就住在這兒了。
注意：并非有for 作為時(shí)間狀語(yǔ)的句子都用現(xiàn)在完成時(shí)。
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。）
注意：用句型轉(zhuǎn)換的方法，很容易排除非延續(xù)動(dòng)詞在有for/since結(jié)構(gòu)的完成時(shí)中的誤用。
1）（對(duì)） Tom has studied Russian for three years. = Tom began to study Russian three years ago, and is still studying it now.
2）（錯(cuò)） 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(duì)，它應(yīng)改為 Harry got married six years ago. 或 Harry has been married for six years.
since的四種用法
1） since +過(guò)去一個(gè)時(shí)間點(diǎn)（如具體的年、月、日期、鐘點(diǎn)、1980, last month, half past six）。例如：I have been here since 1989. 1989起，我一直在這兒。
2） since +一段時(shí)間+ ago。例如：I have been here since five months ago. 我在這兒，已經(jīng)有五個(gè)月了。
3） since +從句。例如：Great changes have taken place since you left. 你走后，變化可大了。 Great changes have taken place since we were here. 我們走后，變化可大了。
4） It is +一段時(shí)間+ since從句。例如：It is two years since I became a postgraduate student. 我考上研究生有兩年了。
《初中語(yǔ)法總結(jié)之since和for》由英語(yǔ)編輯整理,更多請(qǐng)?jiān)L問(wèn):https://www.liuxue86.com/english/