六年級下冊英語作業(yè)課件-Unit 4 Road safety 語法課堂譯林版(共13張PPT)

1、Unit 4 語法課堂1.must、mustnt的用法【重點釋疑】must是情態(tài)動詞,后面直接加動詞原形。表示“必須”。如：You must go home now. 你現(xiàn)在必須回家了。表示堅定的建議。如：You must go to see the doctor. 你必須去看醫(yī)生。表示推測,暗含有很大的可能性,用于肯定句。如：It must be rainy tomorrow. 明天肯定要下雨。雖然must表示“必須”的意思,但是用于否定句時,mustnt卻表示“不要、不能、禁止”的意思,而不是“不必”。如：You mustnt run on the road. 你不能在路上跑。一般疑問句的

2、結(jié)構(gòu)為： Must+主語+動詞原形+其他? 肯定回答為：Yes, must. 否定回答可用：No, neednt.如：Must I finish my homework today? 我今天必須完成家庭作業(yè)嗎？Yes, you must. 是的,你必須要完成。/No, you neednt. 不,你不必完成。Must they clean the classroom now? 他們現(xiàn)在必須打掃教室嗎？Yes, they must. 是的,他們必須打掃。/No, they neednt. 不,他們不必。( ) 【易錯示例】Must I finish my homework today? Tomo

3、rrow is Saturday.A. Yes, you must.B. No, you neednt.C. No, you mustnt.【易錯示例】What do you know about the road (safe)?B2.safe、safety、safely的用法【重點釋疑】（1）safe是形容詞,意為“安全的”。如： The food is safe for babies. 這食品對嬰兒來說是安全的。（2）safety是名詞,意為“安全”。如： For your safety, please do not get off until the train stops.為了你的安全

4、,請在火車停穩(wěn)后下車。（3）safely是副詞,意為“安全地”。如： How can you cross them safely? 你怎么樣才能安全地穿過它們呢？road safety是固定搭配,意為“道路安全”。因此這里應(yīng)該填safety。一、選擇方框中的詞并用其正確形式填空。（可重復(fù)使用）must mustnt neednt cant 1. In the library, you _ keep quiet.must 2. _ you see the sign over there? Dont swim in the river.Im sorry.Cant 3. Must I go home

5、 now?No, you _ . You can play football here for an hour.neednt 4. What must we not do on the road?We_ play football on the road.mustnt 5. I want to be a good student. I_ listen carefully in class.must 6. Can I park my car in front of the library?No, you _ .cant 4. Must Nancy_(wash) clothes now?二、用所給

6、詞的適當形式填空。 1. You mustnt_(run) on the road.run 2. We must stay _ (safe) on the road and cross it_ (safe).safesafely 3. We should pay attention to (注意) medicine _ (safe).safetywash 5. In many big_ (city), many people like eating wild animals.cities 6. It brings us many problems. But we _ (should) be a

7、fraid of it.shouldnt三、按要求完成句子。 1. Must Mike go to see the doctor? (作肯定回答)Yes, _ _ .hemust 2. The children must play football on the road. (改為否定句)The children _ _ football on the road.mustntplay 3. We must look at the traffic lights first. (對畫線部分提問) _ _you_ first?Whatmustdo 4. An old woman is crossing the road. (對畫線部分提問) _is_the road?Whocrossing 5. You cant watch TV now because its late. (對畫線部分提問)