be動(dòng)詞、一般動(dòng)詞和助動(dòng)詞(存儲(chǔ)版)
【正文】 rtant（重要的）necessary（必要的）essential（不可或缺）desirable（有期望的）right（正確的）… is necessary that you (should) take this medicine right away.你有立刻吃藥的必要 is important that you (should) remember this formula.記住這個(gè)公式是重要的、要求171。 口語中，常用have got to 代替have to’ve got to be more patient,Mary.Mary你必須更有耐心 must be kidding.你一定是在開玩笑 is an enormous animal, it must weight a ton.那是個(gè)巨大的動(dòng)物，它可能有一噸216。He doesn’t can speak English. was和were現(xiàn)在式過去式be動(dòng)詞amisarewaswerebe動(dòng)詞過去式的否定句含be動(dòng)詞過去式was/were的肯定句邊否定句時(shí)，在be動(dòng)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(gè)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(dòng)詞過去式的疑問句含be動(dòng)詞過去式was/were的肯定句變疑問句時(shí)，將was/were拿到主語前，句尾加？即可。肯定句：主語+am/are/is…疑問句：Am/Are/Is+主語…？ is his camera.那是他的相機(jī)（疑問句）Is that his camera? girl is a junior high school student.那女孩是初中生（疑問句）Is the girl a junior high school student?O Be動(dòng)詞開頭的疑問句為一般疑問句，可用yes或no回答，而答句中的主語用代名詞（問句）Am/Are/Is+主語…？（答句）Yes,主語+am/are/is No,主語+am/are/is not that man your math teacher?Yes, he is./No,he is not. you eating your lunch?Yes, I am./No, I’m not.（2）一般動(dòng)詞的現(xiàn)在式一般動(dòng)詞的含義凡是日常生活中具體的動(dòng)作，如：eat吃飯，walk走路及抽象的動(dòng)作如：like喜歡，think思考…皆為一般動(dòng)詞主語+一般動(dòng)詞人稱 數(shù)單數(shù)復(fù)數(shù)第一人稱I like dogs.We like dogs.第二人稱You like dogs.You like dogs.第三人稱He likes dogs.They like dogs.O 一般動(dòng)詞加s或es的方法works/plays。且助動(dòng)詞之后用原形動(dòng)詞，因?yàn)橹鷦?dòng)詞表示了時(shí)態(tài)、數(shù)的變化。（問句）Was/Were+主語…？（答句）Yes,主語+was/were/No,主語+was/were+not.Were you a pianist?你是鋼琴家嗎？Yes, I was./No, I wasn’t.一般動(dòng)詞的過去式規(guī)則變化不規(guī)則變化原形動(dòng)詞+ed helphelped/spellspelled/wantwanted原形動(dòng)詞詞尾有e+d loveloved/dancedanced原形動(dòng)詞為子音+短元音+子音：雙寫詞尾+ed stopstopped/planplanned原形動(dòng)詞詞尾為子音+y：去y+ied studystudied/crycriedeatate/taketookreadread/givegaveriderode/teachtaughtecame/seesawgowent/havehad walk to school every day.（過去式）I walked to school yesterday. goes to a supermarket every morning.（過去式）Mother went to a supermarket yesterday.—主語為第三人稱單數(shù)時(shí)，動(dòng)詞過去式不加s。You will can swim soon. 疑問為Used+主語+…？或Did+主語+use to…? used not to drink.=He didn’t use to drink.他以前不喝酒 he to go to school with you?=Did he use to go to school with you? used to talk about our future, didn’t we（或usedn’t we）?我們以前常談到未來，不是嗎？ used to
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