Unit 5 Water Step1 Key points and sentence patterns 单词 词性及词义 词汇拓展 drop n. 滴 v. 掉下；落下 近义词（组）：go down落下 journey n. 旅行；旅程 近义词：trip n. 旅游 tour n. 观光 travelling n. 旅行 quantity n. 数量 近义词：amount n. 数额 number n. 数目 experiment n. 实验；试验 experimental adj. 实验性的 salt n. 盐 salty adj. 含盐的；咸的 voice n. 嗓音；说话声 近义词：sound n. 声音 chemical n. 化学品 chemistry n. 化学 continue v. 继续 近义词（组）：go on 继续 valuable adj. 宝贵的；有用的 value n. 价值 近义词：worth adj. 有价值的 reservoir n. 水库 pipe n. 管道 bit n. 有点，一点 a bit of + n. / a bit+ adj. change n. 找给的零钱 n.& v. 改变 vapour n. 蒸气；雾气 crystal n. 结晶（体） return v. 归还 return to = give back to form v. 形成；构成 stir v. 搅拌 fresh adj. 淡的；无盐的 adj. 新鲜的 through prep. 通过；穿过 prep. 以, 凭借 on prep. （表示已连接、处于工作状态或使用中） 二、短语 1. turn off 关掉（电器） 近义词组：switch off 2. a bit 有点；一点 近义词组：a little 3. (be) made up of 由……组成 近义词组：consist of 4. add … to … 把……加入…… part of ……的一部分 contain sth. pocket money （父母给孩子的）零花钱 n. changes dry up 干涸 1. Then it was time for people to clean me. It’s time (for sb.) to do sth. 到（某人）做某事的时间了 Eg. It’s time for us to prepare for the after school activities. 是时候准备课后活动啦。 2. Having a bath uses about twice as much water as taking a shower. A + 倍数 + as + adj./adv. + as + B 表示A在某方面是B的几倍 China is nearly thirty times as large as Malaysia. 中国面积大概是马来西亚的三十倍。 3. Remember not to waste or pollute the water. remember (not) to do sth. 记着不要做某事 Remember not to leave your homework at home. 别把作业忘在家里。 4. Water covers about two thirds of Earth. be covered by 被……覆盖 The main land of South Pole is covered by the ice and snow. 南极大陆被冰雪覆盖。 5. The tap was on. be on 正在使用中，或正在进行中 The movie is on. 电影正在播放中。 Step2课文回顾 It was an unusual morning. While Dora (1) _____ (brush) her teeth in the bathroom, the tap was still on. (2) _____ angry voice told her to turn that tap off. Dora looked around, (3) _____ she saw nobody there. The voice said he was a drop of water. Dora didn’t know (4) _____ he came from. Some days ago, he was in a cloud. Then he (5) _____ (drop) into a river and ran into a reservoir. Then it was time for people (6) _____ (clean) him because he was dirty. They cleaned him and added some chemicals (7) _____ him. After that, he travelled through the pipes under the streets and he was in Dora’s bathroom. Dora asked if that was the end of his journey. The water told her he should (8) _____ (clean) again. He would go into a river and then into the sea again. His journey started there. Dora felt sorry and knew what (9) _____ (do) next. She turned the tap off and came out of the bathroom. Remember not to waste or pollute water. It is quite (10) _____ (value). Step3语法 Grammar: 量词 I、谈论多少 分类 短语 例 表“许多” a lot of = lots o ... ...
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