be動詞、一般動詞和助動詞-文庫吧資料
2025-05-20 06:01本頁面
【正文】 true.那不可能是真的 kind of thing can happen every now and then.這種事隨時可能會發(fā)生 quarrel can sometimes cause trouble.口角有時可能引發(fā)問題 light in the sky could be a UFO.天空中的光可能是外星飛船 can e in if you have a ticket.如果你有門票就可以進(jìn)來’m afraid you can’t park your car here.恐怕你不能把車停在這兒 I leave early because I’m not well today?——Certainly.因?yàn)槲医裉觳皇娣?，可以早點(diǎn)離開嗎？——可以 you do me a favor?你能幫我忙嗎？178。Does he can speak English? He doesn’t can speak English. 肯定句：主語+一般動詞過去式…疑問句：Did+主語+原形動詞…？ friends went to that movie case week.（疑問句）Did his friends go to that movie last week.（答句）Yes,they did./No,they didn’t. wrote a letter to David.（疑問句）Did Grace write a letter to David?（答句）Yes, She did./No,she didn’t.比較 疑問句過去式He was sick.Was he sick.He did his homework.Did he do his homework?三、助動詞所謂助動詞是和原形動詞合在一起，用來表現(xiàn)時態(tài)、語態(tài)、語氣的動詞。一般動詞過去式的否定句含一般動詞過去式的肯定句變否定句時，不可直接在一般動詞之后加not，必須用助動詞did（不分人稱和數(shù)），而助動詞之后用動詞原形。 Be動詞開頭的疑問句，可用yes或no回答，而答句中的主語用代名詞。 was和were現(xiàn)在式過去式be動詞amisarewaswerebe動詞過去式的否定句含be動詞過去式was/were的肯定句邊否定句時，在be動詞后加not.肯定句：主語+was/were否定句：主語+was/were+not… was a vet.Brown先生是一個獸醫(yī)（否定句） was not（=wasn’t）a vet. and Brain were in the living room at that time.（否定句）Joe and Brain were not （weren’t）in the living room at that time.be動詞過去式的疑問句含be動詞過去式was/were的肯定句變疑問句時，將was/were拿到主語前，句尾加？即可。 助動詞do/does/did開頭的疑問句（即一般疑問句），其回答（問句）Do/Does/Did+主語+原形動詞…？（答句）Yes,主語+do/does/did No,主語+don’t/doesn’t/didn’tDoes the little boy go to school?Yes,he does./No,he doesn’t.比較 疑問句She is beautiful.Is she beautiful? Yes, she is.She loves tennis.Does she love tennis? Yes,she does.二、be動詞、一般動詞的過去式Be動詞的過去式表示：過去時間中發(fā)生的狀態(tài)1.（現(xiàn)在式）He is busy now.（他現(xiàn)在很忙）（過去式）He was busy then.（他那時很忙）2.（現(xiàn)在式）My parents are at home now.（過去式）My parents were at home yesterday.時間副詞改變，動詞也應(yīng)改變。do—用于主語為I/you/復(fù)數(shù)does—用于主語為第三人稱單數(shù)she/hedid—用于過去式，不分人稱和數(shù)均可用肯定句：主語+一般動詞…否定句：主語+do/does/did+not+原形動詞 twin brothers go to school by bus.這對雙胞胎兄弟坐公交車上學(xué)（否定句）The twin brothers do not（=don’t）go to school by bus. has dinner at the restaurant.（否定句）Sam does not（=doesn’t）have dinner at the restaurant.比較 否定句He is my boyfriend.He is not my boyfriend.He likes dogs.He does not like dogs.一般動詞的疑問句含有一般動詞的肯定句變成疑問句時，不可將一般動詞拿到主語前，必須用助動詞do/does/did，且助動詞之后用原形動詞。 助動詞have和hashas為have（
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