Unit5 Water一、核心词汇滴n. 掉下v. 旅行n.数量n. 实验n.淡的;无盐的adj. 盐n.嗓音n. 增加v.化学品n. 通过prep.管道n. 宝贵的adj.一点n. 银行n.找给的零钱n. 归还v.形成v. 继续v.词汇精讲1.drop n.滴v.掉下;落下drop-dropped- dropped 现在分词droppingI am a drop of water. 我是一滴水。
The yellow leaves drop after the wind.当风吹之后,黄色的树叶落下来了。
2.journey n.旅行;旅程【辨析】journey, trip, travel, tour都可以表示“旅行”的意思。
journey指从一个地方出发至达目的地的长途旅行,单程长短途旅行。
trip指休闲或商业目的的短途旅行。
travel指无直达目的地之意,指不同方向的旅行,是不可数名词。
tour以游览、购物、视察为目的的旅行,最后回到原出发点。
【随堂练习】He decided to make a ________to New York.He went on a business________ .He came home after years of foreign________.Last week, we had a ________ to Hongkong.3.quantity n.数量We've always put quality before quantity. 我们总是认为质量比数量重要。
in quantity 大量 a quantity of 大量;许多a (large) quantity of 修饰可数或不可数名词,其短语作主语时,谓语动词用单数。
e.g.A large quantity of people is needed here.(large) quantities of修饰可数或不可数名词,其短语作主语时,谓语动词用复数。
e.g.Quantities of food (nuts) were on the table.4.experiment n.实验;试验vi. 尝试;进行实验do an experiment 做实验experiment on sth. 对…进行实验;试用e.g. The girl in white is doing an experiment.experimental adj.实验(性)的an experimental school 实验学校5.fresh adj. 淡的;无盐的freshen v.使洁净;使清新fresh air 清新的空气e.g.Fresh water was taken to the city by train. 淡水被火车运到这个城市。
We can breathe fresh air in the park . 我们在公园里能呼吸到新鲜的空气。
6.salt n. 盐salty adj. 咸的;含盐的【随堂练习】The soup is not sufficiently_______.The dish is more delicious with more _______ .7.on adv.(表示已连接、处于工作状态或使用中)The tap is on. 这个水龙头是开着的。
These lights are on. 这些灯是开着的。
The TV is on. 这个电视是开着的。
【反义词】off adv. 切断;走开turn on 打开turn off 关掉turn up 调大turn down 调低注意:off\ on\ up\ down都是adv. 接代词只能放中间如:turn it off8. add v.增加;添加Please add a little salt in it. 请放一点盐进去。
【翻译】Do you have anything to add to the list? ____________________________________________ He added some wood to increase the fire. ________________________________________ Can you add these ten figures up? ________________________________________All these figures add up to 5,050. ________________________________________9.chemical n.化学品adj.化学的These chemicals are important for the experiment. 这些化学品对实验很重要。
We want to buy chemical material. 我们要买化学材料。
chemistry n.化学chemist n.化学家10.through prep(介词).通过;穿过The giraffe gets the food through the window. 这个长颈鹿穿过窗户得到食物。
【辨析】across,through和past表示“穿过,通过”。
across表示从表面穿过、横跨过,着重于“从一头或一边到另一头或另一边”;e.g. He walked across the road.through则强调空间概念,表示从内部穿过。
e.g.He can go through the forest by himself. past表示从“面前经过”。
e.g.Someone has just gone past the window.11.valuable adj.宝贵的;很有用的I'm sorry I've already taken up so much of your valuable time. 我很抱歉耽误你那么多宝贵的时间。
The vase is valuable.这个花瓶很宝贵。
value n. 值;价值vt. 评价;重视;估价valueless adj. 无价值的;不值钱的;微不足道的12.bit n.有点;一点There is trouble at the office. 在办公室里有一点麻烦。
a bit 有点;一点 a bit of 一点儿bite --bit(过去式)咬【辨析】a bit 和a bit of 的区别:a bit + 动词、形容词、副词和比较级。
e.g.It's a bit hot. 有点热。
a bit of + 不可数名词e.g.I only have a bit of/a little money. 我仅有一点儿钱。
13.change n.找给的零钱;找头v.改变e.g.We cannot change the past. 我们不能改变过去。
You forgot to ask me for the change. 你忘记叫我找零了。
14.return v.归还(= give back)v.返回(=go/come back)e.g.Will the girl return the wallet to the owner? 这个女孩会把钱包还给失主吗?The boy returned to the school after he took the girl to hospital 当这个男孩把女孩带回学校时,他返回学校了。
15.form v.形成;构成n. 形式,形状;e.g.How do people get to form a band? 人们是怎样形成一个乐队的?Please fill the form. 请填这个表格。
16.stir v.搅拌过去式stirred 现在分词stirringAdd the sugar and stir the mixture with a spoon. 加入糖,然后用汤匙搅拌这个混合物。
17.continue v.继续(=go on)continue doing sth 继续做某事He continues playing basketball in the rain.他继续在雨中打篮球。
二、重点短语1.in the bathroom___________2. 关掉___________3. be on/off___________4. a drop of water_________5. drop sb./sth. into___________6.run into=flow into___________7. 把……加入___________8. make…clean=clean up___________ 9. come out of ___________10. waste water/save water___________ 11. leave the tap on___________12. 遍布全世界___________ 13. 记着做某事___________14. turn…into___________ 15. fall down___________16.有点___________ 17. ……的一部分___________18. 零花钱___________ 19. 由……组成___________20. 干涸___________三、重点语句四、课文内容精析五、语法六、写作指导七、同步练习八、语法专项练习九、单元测试题。