1、test out, turn around等重点短语精1. test out 考验，充分检验。如：I was only testing you out. 我只不过在考验你。This new switch mechanism hasnt been fully tested out. 这种新的开关装置尚未经过充分检验。【拓展】 1) test for测试，鉴定，探测。如：The software has been tested for viruses. 这种软件已经过是否有病毒的测试。They are testing for oil. 他们正在探测石油。2) test (.) on 对进行试验，对
2、进行测验。如：None of this series of cosmetics has been tested on animals. 这一化妆品系列从未在动物身上做过实验。She tested the whole class on irregular verbs. 她对全班学生进行不规则动词测验。2. turn around 转身，转向，好转，改变意见。如：I thought I heard a voice I knew; turning around, I saw my long-lost brother. 我觉得我听到了一个熟悉的声音；转过身来一看，原来是我久无音讯的兄弟。The bus
3、 had to back up and turn around. 汽车得往后退，再倒过来。We want to turn the economy around. 我们要使经济好转。The chairman seems to have changed around. 主席好像改变主意了。【拓展】 1) turn back 往回走，阻止。如：Soon they had to turn back. 不久他们就不得不往回走了。The wheel of history cannot be turned back. 历史的车轮不能倒转。2) turn to 求助于，变成。如：I had to turn t
4、o the dictionary for help. 我只得求助于词典了。The ice turned to water. 冰化成了水。3) turn against 反对，背叛。如：Even those who are once for him begin to turn against him. 连那些原来支持他的人也开始反对他了。Nothing can make me turn against my country. 什么也不能使我背叛我的祖国。3. leave . alone 让独自待着，不打扰，不惹，更不用说。如：A railway station is no place for a
5、 child to be left alone at night. 火车站可不是让儿童在晚上独自待着的地方。He is busy; wed better leave him alone. 他正忙着，我们最好不要打扰他。Leave the dog alone. 不要去惹那条狗。What a strange thing that she and I ever came to meet. Leave alone to marry. 我同她会碰在一起已是够奇怪的了。更不用说结婚了。【拓展】 1) leave behind 留下，忘带。如：It is the little things that I leave behind for my loved ones; great things are for everyone. 我把小小的礼物留给我所爱的人；大的礼物却留给了所有的人。2) leave out 遗漏，省略。如：She left out the date on the cheque. 在支票上她漏写了日期。They must decide what to leave out. 他们必须决定省去什么。
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