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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： 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 Fran ce?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意为嘅然，表示对方已知的无需
2、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 mon ey, 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 beg in 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 mak
3、ing repairs.游泳池今天不开放，因为他们在修理。Why did you move to Fran ce?你们为什么搬原形过去式过去分词dodiddonegowentgonebeatbeatbeate neatateeate nfallfellfalle n过 去 分 词blowblewblow ndrawdrewdraw ndrivedrovedrive ngivegavegive ngrowgrewgrow nknowknewknowntaketooktake nmistakemistookmistake nriseroserise n词尾有nn或seesawsee nshowsh
4、owedshow nthrowthrewthrow nhidehidhidde nrideroderidde nen 或nwritewrotewritte nbreakbrokebroke nchoosechosechosenforgetforgotforgotte nfreezefrozefroze nspeakspokespokenstealstolestole nam / iswasbee narewerebee nfly flewflow nlielaylainwearworewornbringbroughtbroughtbuildbuiltbuiltbuyboughtbought过去
5、式与过catchcaughtcaughtdigdugdugfeelfeltfeltfindfoundfoundgetgotgothanghung / hangedhung / hangedhave / hashadhadholdheldheldkeepkeptkeptlaylaidlaidlear nlear nt / lear nedlear nt / lear nedleaveleftleftlendlentlentloselostlost原形过去式过去分词hearheardheardmakemademademea nmeantmeantmeetmetmetpaypaidpaidsaysa
6、idsaidsellsoldsoldsendsentsentshi neshone / shinedshone / shinedsitsatsatsleepsleptsleptsmellsmeltsmeltspe ndspe ntspe ntspillspiltspiltspitspatspatspoilspoiltspoiltsta ndstoodstoodsweepsweptsweptteachtaughttaughttelltoldtoldth inkthoughtthoughtun dersta ndun derstoodun derstoodwakewoke / wakedwoken
7、 / wakedwinwonwoncostcostcostcutcutcuthithithit去分词形式相同过去式与过去分词形式相同三个形show-showed-show nthrow-threw-throw n式 全 相 同hurthurthurtletletletputputputread /ri:d/read /red/read /red/setsetsetshutshutshuti-a-u形式beg inbega nbeg undrinkdrankdrunkringrangrungsingsangsung工Jsi nksanksunkswimswamswumbecomebecamebe
8、comecomecamecomerunranruncancouldmustmust一willwould一maymight一shallshould一注意区另廿 catch, bring, think, buy, teach这 几个词的过去式与过去分词情态动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-d onego-we nt-go ne2 .过去分词由原形加-en构成beat-beat-beate neat-ate-eate nfall-fell-falle n3 .过去分词由原形加-n构成blow-blew-blow ndra
9、w-drew-draw ndrive-drove-drive ngive-gave-give ngrow-grew-grow nkno w-k new-k nowntake-took-take nsee-saw-see nmistake-mistook-mistake nrise-rose-rise n4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-hidde nride-rode-ridde nwrite-wrote-writte nforget-forgot-forgotten *5 .过去分词由过去式加-n构成break-broke-brokenc
10、hoose-chose-chosen freeze-froze-frozenspeak-spoke-spoken steal-stole-stolen6.完全不规则形式am /is-was-bee nare-were-bee nfly-flew-flow nlie-lay-lainwear-wore-wor n二.过去式与过去分词形式相同brin g-brought-broughtbuild-built-builtbuy-bought-boughtcatch-caught-caughtdig-dug-dugfeel-felt-feltfin d-fo un d-fo undget-got-go
11、thave /has-had-had hold-held-heldkeep-kept-keptleave-left-leftlay-laid-laidlen d-le nt-le ntlose-lost-lostpay-paid-paidhear-heard -heard et-met-metmake-made-mademean-mea nt-mea ntme-satsay-said-saidsell-sold-soldsen d-se nt-se ntsit-satsleep-slept-slept-spilt-spiltsmell-smelt-smeltspe nd-spe nt-spe
12、ntspillspit-spat-spat ep-swept-sweptspoil-spoilt-spoiltsta nd-stood-stoodsweteach-taught-taught tell-told-told-won-wonthin k-thought-thoughtwinun dersta nd-un derstood-un derstoodwake-woke / waked-woke n /wakedhan g-h ung / han ged-hu ng /shin e-sh one / shin ed-sh one / shi ned hangedlear n-lear nt
13、 / 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-cutrt-hurtlet-let-letput-put-putt-shut-shutread /ri:d/-read /red/-read /red/hit-hit-hitset-set-sethurt-hushu四.i-a-u变化形式begi n-bega n-begu n g-sa ng-s ungsin k-sa nk-s unkdrin k-dra nk-dr unk swim-swam-swumrin g-ra ng-ru ngsin五过去分词与原形相同become-became-becomecome-came-come run-ran-runmay-六情态动词（没有过去分词形式）can-couldmust-mustwill-wouldmightshall-should1 AAA型（动词原形、过去式、过去分词同形）bet cast cost cut h打 hurt 伤害）let 让
