because是从属连词.doc

because是从属连词，接表示直接原因的从句，一般放在主句的后面，也可放在主句前面，它表示的语气最强，在回答why的问句时，必须用because。 例如：The swimming pool wont be open today because theyre making repairs. 游泳池今天不开放，因为他们在修理。 Why did you move to France? 你们为什么搬到法国？ Because my father found work in Paris. 因为我父亲在巴黎找到了工作。 注意：在英语中用了because后，不可再用so。 since 意为既然，表示对方已知的无需加以说明的原因或事实，语气比because弱，但是比as 强。 例如：Since we have no money, we cant buy that vase. 既然我们没钱，我们就不能买那花瓶。 Since everybody is here, lets begin our party. 既然大家都到了，那就开始我们的聚会吧！because是从属连词，接表示直接原因的从句，一般放在主句的后面，也可放在主句前面，它表示的语气最强，在回答why的问句时，必须用because。 例如：The swimming pool wont be open today because theyre making repairs. 游泳池今天不开放，因为他们在修理。 Why did you move to France? 你们为什么搬原形过去式过去分词过去分词词尾有ne或en或ndodiddonegowentgonebeatbeatbeateneatateeatenfallfellfallenblowblewblowndrawdrewdrawndrivedrovedrivengivegavegivengrowgrewgrownknowknewknowntaketooktakenmistakemistookmistakenriseroserisenseesawseenshowshowedshownthrowthrewthrownhidehidhiddenrideroderiddenwritewrotewrittenbreakbrokebrokenchoosechosechosenforgetforgotforgottenfreezefrozefrozenspeakspokespokenstealstolestolenam / iswasbeenarewerebeenflyflewflownlielaylainwearworeworn过去式与过去分词形式相同过去式与过去分词形式相同bringbroughtbroughtbuildbuiltbuiltbuyboughtboughtcatchcaughtcaughtdigdugdugfeelfeltfeltfindfoundfoundgetgotgothanghung / hangedhung / hangedhave / hashadhadholdheldheldkeepkeptkeptlaylaidlaidlearnlearnt / learnedlearnt / learnedleaveleftleftlendlentlentloselostlost原形过去式过去分词hearheardheardmakemademademeanmeantmeantmeetmetmetpaypaidpaidsaysaidsaidsellsoldsoldsendsentsentshineshone / shinedshone / shinedsitsatsatsleepsleptsleptsmellsmeltsmeltspendspentspentspillspiltspiltspitspatspatspoilspoiltspoiltstandstoodstoodsweepsweptsweptteachtaughttaughttelltoldtoldthinkthoughtthoughtunderstandunderstoodunderstoodwakewoke / wakedwoken / wakedwinwonwon三个形式全相同costcostcostcutcutcuthithithithurthurthurtletletletputputputread /ri:d/read /red/read /red/setsetsetshutshutshuti-a-u形式beginbeganbegundrinkdrankdrunkringrangrungsingsangsungsinksanksunkswimswamswumbecomebecamebecomecomecamecomerunranrun情态动词cancouldmustmustwillwouldmaymightshallshould注意区别catch, bring, think, buy, teach这几个词的过去式与过去分词初中英语不规则动词的过去式与过去分词归纳一过去分词词尾有字母-n1过去分词由原形加-ne构成do-did-donego-went-gone2过去分词由原形加-en构成beat-beat-beateneat-ate-eatenfall-fell-fallen3过去分词由原形加-n构成blow-blew-blowndraw-drew-drawndrive-drove-drivengive-gave-givengrow-grew-grownknow-knew-knowntake-took-takenmistake-mistook-mistakenrise-rose-risensee-saw-seenshow-showed-shownthrow-threw-thrown4过去分词由原形去字母e后，再双写后面的辅音字母加-en构成（例外）hide-hid-hiddenride-rode-riddenwrite-wrote-writtenforget-forgot-forgotten5过去分词由过去式加-n构成break-broke-brokenchoose-chose-chosenfreeze-froze-frozenspeak-spoke-spokensteal-stole-stolen6完全不规则形式am / is-was-beenare-were-beenfly-flew-flownlie-lay-lainwear-wore-worn二过去式与过去分词形式相同bring-brought-broughtbuild-built-builtbuy-bought-boughtcatch-caught-caughtdig-dug-dugfeel-felt-feltfind-found-foundget-got-gothave / has-had-hadhold-held-heldkeep-kept-keptleave-left-leftlay-laid-laidlend-lent-lentlose-lost-lostpay-paid-paidhear-heard-heardmake-made-mademean-meant-meantmeet-met-metsay-said-saidsell-sold-soldsend-sent-sentsit-sat-satsleep-slept-sleptsmell-smelt-smeltspend-spent-spentspill-spilt-spiltspit-spat-spatspoil-spoilt-spoiltstand-stood-stoodsweep-swept-sweptteach-taught-taughttell-told-toldthink-thought-thoughtwin-won-wonunderstand-understood-understoodwake-woke / waked-woken / wakedshine-shone / shined-shone / shinedhang-hung / hanged-hung / hangedlearn-learnt / learned-learnt / learned三原形、过去式与过去分词三种形式完全相同cost-cost-costcut-cut-cuthit-hit-hithurt-hurt-hurtlet-let-letput-put-putset-set-setshut-shut-shutread /ri:d/-read /red/-read /red/四i-a-u变化形式begin-began-begundrink-drank-drunkring-rang-rungsing-sang-sungsink-sank-sunkswim-swam-swum五过去分词与原形相同come-came-comerun-ran-runbecome-became-become六情态动词（没有过去分词形式）can-couldmust-mustwill-wouldmay-mightshall-should1AAA型（动词原形、过去式、过去分词同形）betcastcostcuthit打hurt伤害）let让put放置read（读）read read rid免除set安置spread (伸展/传播)spreadspreadquit放弃quit/quitted，quit / quittedspit吐出spat / spit, spat / spitwet淋湿wet / wetted ,wet / wetted2AAB型（动词原形与过去式同形）beat（跳动）beatbeaten(3) ABA型（动词原形与过去分词同形）become（变成）became becomecome（来）came comerun（跑）ran run(4) ABB型（过去式与过去分词同形）bend使弯曲bent，bentbring拿来brought，broughtbuild建造built，builtburn燃烧burnt / burned，burnt / burnedbuy买bought，boughtcatch捕捉caught，caughtdeal分配dealt，dealtdig（挖）dug dugdream做梦dreamed / dreamt，dreamed / dreamtfeed喂fed，fedfeel触摸felt，feltfight作战fought，foughtfind找出found，foundflee (逃跑) fled fledget（得到）got gothang（吊死）hanged hangedhang（悬挂）hung hunghave / has有had，hadhear听到heard，heardhold（抓住）held heldkeep保持kept，keptlay (产卵) laid laidlead引导led，ledlearn学习learnt / learned，learnt / learnedleave离开left，leftlend借贷lent，lentlight点着lit / lighted，lit / lightedlose遗失lost，lostmake制作made，mademean表意思meant，meantmeet遇到met，metpay支付paid，paidprove证明proved，proved / provenquit放弃quit/quitted，quit / quittedrebuild改建rebuilt，rebuiltretell复述retold ,retoldsaw锯sawed ,sawed / sawnsay说said ,saidseek寻觅sought ,soughtsell卖sold ,soldsend送/寄sent ,sentsew缝合sewed ,sewn / sewedshine发光shone ,shone擦亮shined ,shinedshoot放（炮）shot ,shotsink下沉sank / sunk，sunk / sunkensit坐sat，satsleep睡slept ,sleptsmell发出气味smelt ,smeltsow种植sowed ,sown / sowedspell拼写spelt / spelled ,spelt / spelledspend花费spent ,spentstand站立stood ,stoodsweep打扫swept ,sweptspit吐出spat / spit, spat / spitstick (粘贴/刺)stuck stuckteach教taught ,taughttell告诉told, toldthink思考thought ,thoughtunderstand了解understood ,understoodwet淋湿wet / wetted ,wet / wettedwin获胜won, won(5) ABC型（动词原形、过去式与过去分词三者不同形）arise出现arose，arisenawake醒来awoke，awaked / awokenbe(am / is / are)是was / were，beenbegin（开始）began begunbite咬bit，bittenblow吹blew，blownbreak打破broke，brokenchoose选择chose，chosendo / does做did，donedraw画，拉，拖drew，drawndrink（喝）drank drunkdrive驾驶drove，driveneat吃ate，eatenfall掉落fell，fallenfly飞flew，flownforbid禁止forbad，forbiddenforget忘记forgot，forgottenforgive原谅forgave fo