高中英语必修三unit4阅读2009217103929731.ppt

2. … allowed the earth to dissolve harmful gases… In fact he doesn’t allow us to smoke anywhere at any time. 实际上，他不允许我们在任何地方任何时候吸烟。 allow vt. 允许、许可、容许 allow+n./pron./doing allow sb. to do be allowed to do 父亲不允许有人在家里吸烟。 My father doesn’t allow smoking at home. Are we allowed to use the computer? 我们可以用电脑么？ 3 ... which encouraged the development of … 这为早期贝类及其他各种鱼类的发育进一步创造了条件。 名词后缀-ment加在动词之后表示： 行为，例如：argument, betterment, development, treatment. 结果，例如：arrangement, settlement, statement. 工具，例如：instrument, pavement. 4. ... which encouraged the development of …. encourage 鼓舞；促进；怂恿。后接名词、代词，也可接不定式作宾语补足语。如： High prices for corn and wheat will encourage farming. 玉米和小麦的高价将促进农业的发展。 My success encouraged me to continue. 我的成功鼓励我继续干下去。 He encouraged me to learn dancing. 他鼓励我去学跳舞。 5. spread的用法 The fire spread from the factory to the house nearby.传到, 涉及,蔓延到 （1）vi. (消息等)传开,流传,蔓延。如： The news spread through the school very quickly. （2）vt. “使伸展,延伸,张开”,常与out连用。 He spread out his arms to welcome us. I spread a new cloth on the table. 我在餐桌上铺上一条新桌布。 他张开手臂欢迎我们。 6. Whether life will continue on the earth for millions of years to come will depend on whether this problem can be solved. （1）for millions of years to come中不定式to come作定语，与前面的名词之间有逻辑上的主谓关系： She is the last person to do such a thing. 她是最不像会做这种事的人。 （2）(sth) depend on (sth else): something might only happen or be true if the circumstances are right for it 取决于。 Our success depends on whether everyone works hard or not. 我们的成败取决于是否每个人都努力工作。 8. exist v. 存在,生存,维持生活 exist in 存在于…之中 exist on 靠…为生 exist by 靠…生活 existent adj. 存在的,现存的 existence n. 存在, 生存 The two sides have reached a partial agreement, but several differences still exist between them. The Roman empire existed for several centuries. They are paid hardly enough to exist on. She exists on tea and bread. 9. lie, lay, lain, lying lie, lied, lied, lying lay, laid, laid, laying 躺；位于 说谎 下蛋；平放