1、unit7 topic2 語法專項(xiàng)課件語法專項(xiàng)課件（情態(tài)動詞（情態(tài)動詞can和和could的用法）的用法）初中英語仁愛版七年級下冊初中英語仁愛版七年級下冊語法透析語法透析考點(diǎn)大觀考點(diǎn)大觀易錯辨析易錯辨析通關(guān)訓(xùn)練通關(guān)訓(xùn)練情態(tài)動詞三注意：情態(tài)動詞表示說話人的語氣或情緒情態(tài)動詞無人稱和數(shù)的變化情態(tài)動詞后跟動詞原形常見的情態(tài)動詞：must, can, may, shall, could, might, should, will, would, need等。1. 表示能力時(shí)，意為“能、會”。2. 表示請求或許可時(shí)，意為“可以”。3. 表示猜測時(shí)，意為“可能”。例：he can speak a littl

2、e japanese. 他會說一點(diǎn)日語。例：can i help you? 要我?guī)兔幔坷簑here can she go now? 她現(xiàn)在可能到哪里去了呢？肯定句：can + 動詞原形否定句：can后加not（縮寫為cant)一般疑問句：can提前 he can speak english. he can not (cant) speak englishcan he speak english?2.表示過去一般的能力，意為“能、會”。1. 表示委婉請求，意為“可以”。3. 表示猜測時(shí)，意為“可能”。could you speak english then?could i use your

3、pen? you could be right, but i dont think you are.肯定句：could + 動詞原形否定句：could后加not（縮寫為couldnt)一般疑問句：could提前i could speak english when i was three.i couldnt speak english when i was three.could you speak english when you were three? can 和 could的區(qū)別can 和 could的區(qū)別it cant be true.we could go there this sum

4、mer.(表推測，can用于否定句）(表推測，不限句式）can 和 could的區(qū)別can i use your pen? could i use your pen? (can表請求）(could表更委婉請求）yes, of course you can.注意：對請求、允許相關(guān)問句的回答，只能用can。解析解析【典例1】_ i borrow your dictionary? yes, of course you _. a. can; could b. could; can c. can; can d. could; could 考查情態(tài)動詞。句意：我可以借用一下你的字典嗎？當(dāng)然可以。表示“委婉請求”選用could，需要用can來回答。故答案選b。解析解析【典例2】that man must be sarahs husband. no, he _be her husband. she is still single. a. cant b. mustnt c. may not d. co