關(guān)于be動(dòng)詞、情態(tài)動(dòng)詞和實(shí)義動(dòng)詞的區(qū)別-全文預(yù)覽
【正文】 He is strict with us. (變?yōu)榉穸ň?④She is from America. (變?yōu)榉穸ň?以上四個(gè)句子中都含有am、 is或are，變否定句時(shí)，直接在am 、is、：①I’m not a Chinese boy.②You are not good.③He is not strict with us.④She is not from America.(2)變?yōu)橐话阋蓡柧洌築e+主語+其他？即把be動(dòng)詞提到主語的前面。1. be動(dòng)詞屬于系動(dòng)詞, 在句子中主要表現(xiàn)為三種形式：am is、are。下面我們分別來講一下它們得用法。(1)變?yōu)榉穸ň洌褐髡Z+be+ not+其他。我們這里主要以can為例來說明情態(tài)動(dòng)詞的用法。(1)變否定句：主語+can +not+ 其他。就我們現(xiàn)在所學(xué)的內(nèi)容來講，實(shí)義動(dòng)詞所在的句子中一般不存在be動(dòng)詞。而在變否定句和疑問句時(shí)，不能直接在動(dòng)詞上變，而是要借助另一類動(dòng)詞：助動(dòng)詞do、does。① I have a blue book.(變?yōu)橐话阋蓡柧?→Do you have a blue book?② He has a brother. (變?yōu)橐话阋蓡柧?→Does he have a brother?③ My brother does his homework before supper. (變?yōu)橐话阋?
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