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【導(dǎo)讀】一般現(xiàn)在時(shí)——am/is/are+.一般過(guò)去時(shí)——was/were+.現(xiàn)在完成時(shí)——have/has+been+.do→bedone(be動(dòng)詞隨著時(shí)態(tài)。須加適當(dāng)?shù)慕樵~:tofor.

  

【正文】 A great deal of water is needed in large cities. Some cities pump(抽水)water from wells. Some cities g__ water from lakes or rivers n______. But some cities have to bring water from lakes or rivers many miles away. Complete the passage: et earby Water is usually b_______ to a city from a place higher than the city itself. When water is f_____ only in the lower place, it must be pumped up to the city. Then it is s____ to each home. Dams(水壩 ) are often b___ in a river to keep the water from flowing away. rought ound ent uilt Then a new lake is formed. The city knows how much water will be n_____ and allows the extra(額外的 ) water to flow below the dam. I __ this way, the city stores water for its use. There is usually a b_______ near the dam. Much important work is d___ there. For example, the water is tasted before it is piped to the city. eeded n uilding one Fill in the blanks with the verbs using right tenses and voices: 1. Large numbers of plastic bags _______ (use) in the supermarkets every day. 2. ___ our country ____(send) up another manmade satellite last year? 3. Must the old people _________ (speak) to politely? are used Did send be spoken 4. Her grandma was still alive when he _________(take) to the hospital. 5. English ________ (speak) in many counties, but the Chinese _____ (speak) their own language. 6. Three quarters of the world’ s books __________ (write) in English. was taken is spoken speak are written 7. This kind of sweater ____ (sell) well. 8. ____ Lesson 50 _________ (teach) next week? sells Will be taught 你們學(xué)校附近有一個(gè)大圖書(shū)館,館內(nèi)有各種各樣的書(shū),請(qǐng)你將這個(gè)圖書(shū)館的要求向你的同學(xué)作一介紹,以便他們?nèi)ツ莾嚎磿?shū)時(shí)能遵守規(guī)則。 Homework (writing): 1. 不要把包帶進(jìn)圖書(shū)館。 2. 看書(shū)時(shí)保持安靜。 3. 一次可借四本書(shū) , 不能將書(shū)轉(zhuǎn)借給別人 , 要按時(shí)還書(shū)。 4. 圖書(shū)館每天早晨 8:00開(kāi)門(mén) , 必須在下午6:00前離開(kāi)圖書(shū)館。 要求 : 用英文寫(xiě)一篇 60— 80詞左右的短文。
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