both的用法.doc

both的用法 MyfatherandmymotherarebothfromEngland（both放在系動(dòng)詞后,“都”）=Bothofmyfatherandmymother/my parents arefromEnglandboth的用法總結(jié)both的用法有兩種，它可以和名詞、代詞連用，也可以和動(dòng)詞連用，在句中作主語(yǔ)、賓語(yǔ)及同位語(yǔ)，也可作定語(yǔ)?，F(xiàn)將其用法歸結(jié)如下：1)both與名詞、代詞連用(1)both(of)the/物主代詞/指示代詞+名詞，如：Bothofthecatsareasleep.兩只貓都睡著了。IboughtbothofthesebottlesinChinatwoyearsago.兩年前我在中國(guó)買了這一對(duì)瓶子。Bothofhisdaughtersaredoctors.他的兩個(gè)女兒都是醫(yī)生。(2)both直接修飾名詞時(shí)，不加of。如：Bothchildrenwonprizes.兩個(gè)孩子都得了獎(jiǎng)?！咀⒁狻坎荒苷f(shuō)bothofchildren，但可以說(shuō)bothofthechildren.Ivegotoilonbothhands.我兩手都是油?！咀⒁狻坎荒苷f(shuō)bothofhands，可說(shuō)bothofmyhands。(3)在人稱代詞前一定要用bothof，不能說(shuō)bothwe或bothus，但可以說(shuō)usboth,themboth等。如：Bothofuslikeskating.我們倆都喜歡滑冰。 = We both likeskating.Iwantbothofthem.兩個(gè)我都要。 = I want them both.2)both與動(dòng)詞連用當(dāng)both在句中作主語(yǔ)的同位語(yǔ)時(shí)，也可與動(dòng)詞連用，both在句中的位置有以下三種情況：(1)放在是動(dòng)詞be之后。如：Thechildrenarebothlovely.這兩個(gè)孩子都很可愛(ài)。 = Both of the children / Both children are lovely.TheyarebothfromAustralia.他們兩個(gè)都是澳大利亞人。 = Both of them are from Australia.【注意】在感嘆句或簡(jiǎn)略答語(yǔ)中，both應(yīng)置于be之前。如：Howbeautifultheybothare!他們倆多漂亮??！-AreyoubothfromJapan?-Yes,webothare.“你們倆都是日本人嗎？”“是的，我們是?！?2)放在行為動(dòng)詞前。如：WebothlikewatchingTV.我們倆都喜歡看電視。ThemenbothlookedFrench.那兩個(gè)人看起來(lái)都像是法國(guó)人。(3)當(dāng)謂語(yǔ)動(dòng)詞是由幾部分組成時(shí)，both要放在第一個(gè)助動(dòng)詞后面。如：Wehavebothstudiedacting.我們倆都學(xué)過(guò)演戲。Theroomshavebothbeencleaned.這兩間屋子都已打掃過(guò)了。3)both作代詞時(shí)，可單獨(dú)使用，其后不接名詞。如：Thebrothersaregoodatplayingbasketball.Bothwilltakepartinthegame.這弟兄倆人籃球打得好，他們倆都將參加比賽。-Whichonedoyouwant?-Illtakebothplease.“你要哪一個(gè)？”“兩個(gè)我都要?！薄咀⒁狻縝oth與not連用，是部分否定。如：Boththedoorsarenotopen.兩扇門并不都開(kāi)著。 Both of us are not students.我們并不都是學(xué)生。=both 表示“兩者都 ”是個(gè)副詞,也可以做代詞,例: 副詞:We are both students. 代詞:Both of us are students. 它的否定形式是neither 詞性和both一樣,例: 副詞:We are neither STUDENT, 注意是單數(shù)名詞. 代詞:Neither of us IS a student 同樣注意也是單數(shù) =Both的用法及注意事項(xiàng)一、形容詞both作“兩”、“雙”解：1.Both (of the)instruments are valuable to this process.（定語(yǔ)）這兩個(gè)儀器對(duì)這個(gè)過(guò)程都是很有價(jià)值的。2.Both (the)students have made a good few experiments on electricity.（定語(yǔ)）這兩個(gè)學(xué)生都做了不少電學(xué)實(shí)驗(yàn)。二、代詞both作“兩人”、“兩者”解：1.Both (of them)have been to Beijing.（主語(yǔ)）他們兩人都去過(guò)北京。 2.There are two English books on the table. He wants to read them both in a short time.（同位語(yǔ)）桌上有兩本英語(yǔ)書，他想在短時(shí)期內(nèi)閱讀這兩本書。3.Steel and petroleum both play an important part in the development of industry and agriculture.（同位語(yǔ)）鋼和石油這兩樣?xùn)|西在工農(nóng)業(yè)發(fā)展中起著重要作用。4.He and I are both from Tianjin.（both作同位語(yǔ)。注意both在本句中的詞序和上兩句不同。）他和我都是天津人。三、“bothand”起連接詞作用，作“兩者都”、“又又”、“不但而且”解：注意：“bothand”能連接各種并列成分，甚至兩個(gè)句子。1.Both copper and silver are good conductors of electricity.（連接兩個(gè)主語(yǔ)）銅和銀都是良好的電導(dǎo)體。2.The molecules of common salt all contain atoms of both the gas and the metal which compose the salt.（連接of的兩個(gè)賓語(yǔ)）食鹽分子都具有構(gòu)成食鹽的氣體和金屬這兩種物質(zhì)的原子。3.Alloys are both useful and important.（連接兩個(gè)表語(yǔ)）合金既有用又重要。4.To do work, you must both exert force and move something.（連接兩個(gè)動(dòng)詞短語(yǔ)）為了作功，你必須既施加力又推動(dòng)某個(gè)東西。5.Copper is an important conductor, both because of its high conductivity and because of its abundance and low cost.（連接兩個(gè)狀語(yǔ)）銅是一種重要的導(dǎo)體，因?yàn)樗膶?dǎo)電率高，而且資源豐富，價(jià)格又低。6.It is necessary to build a lot of petrochemical works, both because China is rich in petroleum and because there is a great demand for petrochemicals.（連接兩個(gè)狀語(yǔ)從句）由于中國(guó)石油豐富，而對(duì)石油化學(xué)產(chǎn)品需要量又大，所以有必要建立許多石油化工廠。四、注意“both+否定式謂語(yǔ)+”構(gòu)成部分否定：1.Both (the)instruments are not precision ones.并非這兩個(gè)儀器都是精密儀器。2.Both of the books are not helpful.這兩本書并非都是有益的。如果要將上述兩句改成全部否定，則就應(yīng)寫成：1.Neither instrument is precision one.(=Either instrument is not precision one.=Either of the instruments is not precision one.)這兩個(gè)儀器都不是精密儀器。2.Neither of the books is helpful.(=Either of the books is not helpful.=Either book is not helpful.)這兩本書都不是好書。both當(dāng)形容詞的時(shí)候，有both of the boys=both boys =both the boys（兩個(gè)男孩都.）接代詞的時(shí)候是:both of us=we both（我們都.）當(dāng)both做副詞的時(shí)候，放在Be動(dòng)詞，助動(dòng)詞，情態(tài)動(dòng)詞之后，行為動(dòng)詞之前,比如說(shuō):We both like English. We can both sing.另外，both 也構(gòu)成短語(yǔ)both.and.（兩者都.）,比如:Both Tom and Ti