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17. Most animals and plants are sensitive to large or sudden changes in temperature,… 大多数的动物或植物对温度大的或突然的改变非常敏感，…(p.20 Heat Capacity 第3行) ▲be sensitive to意为“对……敏感”。如：① The eye is sensitive to light. 眼睛对光敏感。② Photographic paper is highly sensitive to light. 照相纸对光十分敏感。③ An artist is sensitive to beauty. 艺术家对美是敏锐的。 ▲sensitive有“神经质的”“神经过敏的”意思。如：① You really must stop being so sensitive about your accent.你实在不必为自己的口音感到烦燥不安。② Don't mention she's put on weight—she's very sensitive about it. 不要说她胖了—她对此非常敏感。 ▲sensitive可引申为“善解人意的”。如：He is very sensitive to his pupils' need for encouragement and knows when to praise them.他非常理解学生对鼓励的需要，并知道何时表扬他们。 【注】另一个词sensible和sensitive一样都是形容词，但意思不同。sensible意为“明智的”“合情合理的”。如：① She's very sensible about money.她在金钱方面是非常理智的。②Why don't you do something sensible in your spare time?你为什么不在业余时间干些有意义的事情呢? ③ You are sensible to take his advice. 你听从他的劝告是明智的。 18. The water in the oceans also keeps the temperature of the earth steady by absorbing and giving off heat. 由于海水的吸热和释热的作用，从而使地球的温度保持稳定。(p.20 Heat Capacity最后一行) ▲ keep的几种用法 (1) keep可用于复合结构，其宾语补足语可以是介词短语、现在分词、过去分词、形容词、副词等。如：① I'll keep the box in the shade. 我将把盒子保存在阴影处。 ② The bad cold kept him in bed for three days. 他得了重感冒，只得卧床三天。③I'm sorry to have kept you waiting. 对不起，让你久等了。④ It's cold inside．Let’s keep the fire burning. 屋里很冷，咱们让炉子烧下去吧。⑤ Don't keep the door closed all day long. 不要整天把门关着。⑥ She keeps the windows covered with curtains. 她总是把窗帘拉着。⑦Sports and games help to keep people healthy. 体育活动有助于健康。⑧ It's blowing hard．and I can hardly keep my eyes open.风刮得很大，我简直睁不开眼。⑨ We should keep the children away from the dangerous animals. 我们不能让孩子们靠近那些危险的动物。⑩ There's a lot of air in loose snow, and this helps to keep the cold out. 松散的积雪里有大量空气，这有利于御寒。 (2) keep表示“保存”“保管”。如：① How long can I keep this book? 这本书我可以借多久?(不能用borrow) ②Will you keep these boxes for me while I'm away? 我不在时，请你替我保管这几个箱子，行吗? ③This building is about 100 years old, but it has been well kept. 这幢建筑有一百年左右的历史了，迄今还保存完好。 (3) keep用作连系动词，后面接形容词作表语。① I hope you're keeping well. 我希望你身体健康。② Keep cool and listen to me. 冷静点，听我说。 (4) keep表示“养活”“饲养”。如：① Mr Ford has a big family to keep (= support). Ford先生要养活一大家人。② His job is to keep pigs on a farm. 他的工作是在一个农场上养猪。 注意：raise表示“从小养到大”，因此我们可以说：① She was raised (=brought up) by her grandmother. (她是由她祖母带大的。) ② He has three children to raise／keep／support. (他要抚养三个孩子。) 在下面句子中不能用raise: He has a wife and two children to keep／support. (他要养活妻子和两个孩子。) 因为这里raise不适用于wife。 (5) keep on doing sth. 表示“继续做某事”“坚持不懈地，不间断地做某事”“反复地做某事”。Go on doing sth. 有时也可表示这些意思。例如：①The farmers kept on working in the fields when it began to rain.下雨的时候，农民们还不停地在地里劳动。②Don't give up，keep on trying. 不要半途而废，要坚持努力。③ Don't keep (on) doing such silly things.不要老是做这样的傻事。 (责任编辑：admin) |