because是从属连词

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1、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：Theswimmingpoolwon'tbeopentodaybecausethey'remakingrepairs.游泳池今天不开放，因为他们在修理。WhydidyoumovetoFrance?你们为什么搬到法国？BecausemyfatherfoundworkinParis.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

2、"，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：Sincewehavenomoney,wecan'tbuythatvase.既然我们没钱，我们就不能买那花瓶。Sinceeverybodyishere,let'sbeginourparty.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：Theswimmingpoolwon'tbeopentoday

3、becausethey'remakingrepairs.游泳池今天不开放，因为他们在修理。WhydidyoumovetoFrance?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ndodiddonegowentgonebeatbeatbeateneatateeatenfallfellfallenblowblewblowndrawdrewdrawndrivedrovedrivengivegavegivengrowgrewgrownknowknewknowntaketooktakenmistakemistookmis

4、takenriseroserisenseesawseenshowshowedshownthrowthrewthrownhidehidhiddenrideroderiddenwritewrotewrittenbreakbrokebrokenchoosechosechosenforgetforgotforgottenfreezefrozefrozenspeakspokespokenstealstolestolenam/iswasbeenarewerebeenflyflewflownlielaylainwearworeworn   

5、bringbroughtbrought过去式与过去分词形式相同         过去式与过去分词形式相同buildbuiltbuiltbuyboughtboughtcatchcaughtcaughtdigdugdugfeelfeltfeltfindfoundfoundgetgotgothanghung/hangedhung/hangedhave/hashadhadholdheldheldkeepkeptkeptlaylaidlaidlearnlearnt/learnedlearnt/learnedleaveleftleftle

6、ndlentlentloselostlost原形过去式过去分词hearheardheardmakemademademeanmeantmeantmeetmetmetpaypaidpaidsaysaidsaidsellsoldsoldsendsentsentshineshone/shinedshone/shinedsitsatsatsleepsleptsleptsmellsmeltsmeltspendspentspentspillspiltspiltspitspatspatspoilspoiltspoiltstandstoodst

7、oodsweepsweptsweptteachtaughttaughttelltoldtoldthinkthoughtthoughtunderstandunderstoodunderstoodwakewoke/wakedwoken/wakedwinwonwoncostcostcost三个形式全相同cutcutcuthithithithurthurthurtletletletputputputread/ri:d/read/red/read/red/setsetsetshutshutshuti-a-u形式beginbeganbeg

8、undrinkdrankdrunkringrangrungsingsangsungsinksanksunkswimswamswum becomebecamebecomecomecamecomerunranrun情态动词cancould－mustmust－willwould－m