有關(guān)be動(dòng)詞、情態(tài)動(dòng)詞和實(shí)義動(dòng)詞的區(qū)別-免費(fèi)閱讀
【正文】 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)變否定句：主語+can +not+ 其他。(1)變?yōu)榉穸ň洌褐髡Z+be+ not+其他。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。情態(tài)動(dòng)詞后面必須接動(dòng)詞的原形。也就是在含有實(shí)義動(dòng)詞的句子變否定句或疑問句時(shí)，一定不能用be動(dòng)詞。① I have a blue book.（變?yōu)榉穸ň洌鶬 don’t have a blue book.② He has a brother. （變?yōu)榉穸ň洌鶫e doesn’t have③ She wants to be a teacher. （變?yōu)榉穸ň洌鶶he doesn’t want to be a teacher.④ They like to play basketball. （變?yōu)榉穸ň洌鶷hey don’t like to play basketball.(3)一般疑問句：Do/Does +主語+動(dòng)詞原形+其他？句中加了do/does后，其后面的動(dòng)詞還是必須用動(dòng)詞原形。實(shí)義動(dòng)詞，也叫行為動(dòng)詞。如：① I’m well.（對劃線部分提問）→How are you?②She is from America. （對劃線部分提問）→Where is she from?2.
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