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助動(dòng)詞(do, does )的用法 只有實(shí)意動(dòng)詞作謂語(yǔ)時(shí)才涉及使用助動(dòng)詞。以like為例: 當(dāng)句子為肯定句時(shí)不涉及使用助動(dòng)詞,只涉及“主謂一致”原則。 eg : I like English a lot. Michael likes Chinese food very much. 當(dāng)句子為否定句時(shí),要根據(jù)主語(yǔ)的人稱來(lái)決定使用相應(yīng)的助動(dòng)詞:當(dāng)主語(yǔ)為“三單”時(shí),要使用does。當(dāng)主語(yǔ)為“非三單”時(shí),用助動(dòng)詞原形do。例如把下列句子變否定句: eg : Kangkang likes doesn’t like math. They like don’t like sports. 當(dāng)句子變疑問(wèn)句時(shí),: eg : Michael likes Chinese Michael like Chinese food? Yes, he does./ No, he doesn’t. Jane and Helen like Jand and Helen like music? Yes, they do./ No, they don’t. There be句型 (1)There be句型主要用以表達(dá)“某處(某時(shí))有某人(某物)。”其基本結(jié)構(gòu)為“There be+某物(某人)+某地(某時(shí))”其中there是引導(dǎo)詞,沒(méi)有詞義。主語(yǔ)是be后面的名詞, be是謂語(yǔ)動(dòng)詞,在一般現(xiàn)在時(shí)中be只用is和are兩種形式。下面這首歌訣可幫你巧記there be句型結(jié)構(gòu): There be放句首,主語(yǔ)跟在后。地、時(shí)放句末,強(qiáng)調(diào)置前頭。There is a book on the desk. 有時(shí)為了強(qiáng)調(diào)地點(diǎn),也可把介詞短語(yǔ)放在句首。如:On the desk there is a book. (2)There be句型中的be動(dòng)詞