(
课件网) 1. It also helps control your body temperature, prevents your body from losing too much water, warns you when things are too hot or cold, and gives you your sense of touch. 皮肤还有助于控制你的体温，防止你的身体流失过多水分，当东西太热或太冷时可以警示你，并使你拥有触觉。 句子结构分析： 本句是一个复合句，句中helps, prevents, warns 和gives是and连接的四个并列谓语。 when引导的时间状语从句，说明动词warns发生的时间 prevent… (from) doing 阻止……做…… e.g. All kinds of measures have been taken to prevent the virus from spreading. keep … from doing sth. stop … (from) doing sth. protect … from/against … 保护……免受…… 阻止……做某事 注意：keep… from doing sth.中的from不能省略，因为如果省略，意思会发生变化：keep … doing sth. 使……一直做某事。 It also helps control your body temperature, prevents your body from losing too much water, warns you when things are too hot or cold, and gives you your sense of touch. 【语境应用】完成句子。 1) There is no denying that sunglasses can help _____ (以保护眼睛免受伤害). 2) Anyhow, children should be _____ _____ (阻止孩子们玩火). prevent / stop your eyes being harmed prevented / kept / stopped from playing with fire 2. As you can imagine, getting burnt can lead to very serious injuries. 可想而知，烧伤会造成严重的后果。 e.g. We often observed the germs in the lab under the microscope, as I remember. As we all know, he is a hard-working man. as引导的非限制性定语从句 动词-ing形式作主语 3. You can get burnt by a variety of things: hot liquids, steam, fire, radiation, the sun, electricity, acids, or other chemicals. 你可能会被各种各样的东西烧伤：灼热的液体、蒸气、火、辐射、太阳光、电流、酸性物质或其他化学品。 a (wide/great/large) variety of 各种各样的 a variety of = varieties of + 名词复数 + 复数谓语动词 the variety of + 名词复数 + 单数谓语动词 e.g. The variety of creatures is one of man’s greatest wealth. 【链接】 variety n. 种类, 品种; 变化, 多样化, 多变性 various adj. 各种各样的 vary v. 变化; 使多样化 vary from … to … 因……而异 vary in ... 在……方面不同 vary with 随着……而变化 【语境应用】根据汉语意思补全下面句子（每空一词）。 1) 这些花的颜色和大小都不相同，但它们都很漂亮。 The flowers _____ _____ _____ _____ _____ but all of them are beautiful. 2) 这家宾馆每个房间的费用由20美元到30美元不等。 The charge for a room in this hotel _____ _____ $20 _____ $30. 3) 一般来说，水果和蔬菜的价格随季节变化而变化。 Generally speaking, prices of fruit and vegetables _____ _____ _____ _____. vary with the season vary in colour and size varies from to 4) 这一工具有多种用途。 This tool can be used _____ _____ _____ _____ _____. 5) 正是因为变化多才使得我的工作如此有趣。 _____ _____ _____ that makes my job so enjoyable. in a variety of ways It's the variety 4. Remove any clothes using scissors if necessary, unless you see the fabric sticking to the burnt skin. 如有必要，用剪刀剪掉烧伤部位的衣服，除非衣服与烧伤的皮肤粘连在一起。 句子结构分析： 本句为主从复合句，u ... ...
