必修4---Module 4.ppt

Its yield is much greater than the yield of other types of rice grown in Pakistan.它的产量比巴基斯坦所种植的其它水稻产量都要高很多。 [知识提炼]　句中much修饰比较级，意为“……得多”。 [句式仿写]　那本书很有趣，但是这本书更有趣。 . That book is interesting，but this one is even more interesting 2/3 of the worlds population regularly eat rice.世界人口中有三分之二的人经常吃大米。 [知识提炼]　分数或百分数修饰名词作主语时，谓语动词的单复数由名词决定。 [句式仿写]　地球表面的三分之二被水覆盖。 . Two thirds of the earths surface is covered by water Or was he carried miles into space，becoming the world‘s first astronaut？ 或者他被带到了空中数英里的地方，成为了世界上第一个宇航员？ [知识提炼]　本句中的becoming the worlds first astronaut是现在分词短语作结果状语。现在分词作结果状语常表示一种自然结果或意料之中的结果。 [句式仿写]　音乐会因为某种原因取消了，这使得孩子们很失望。 . The concert was cancelled for some reason，making the children disappointed But not everybody wanted to use rockets in battles.并不是人人都想在战斗中使用火箭。 [知识提炼]　not everybody“并不是每个人”表示部分否定。 [句式仿写]　不是所有的预言都能变成现实。 . Not all predictions can come true He thought that the key to feeding people was to have more rice and to produce it more quickly. 他认为，养活世人的关键是拥有更多的水稻并且能更快地生产出来。 the key to (doing) sth.做某事的关键，……的钥匙。其中to是介词，所以后面接名词、代词、v.-ing形式或what引导的从句。 ①The key to success is to be ready from the start. 成功的关键是从开始就准备好。 ②A nod was her answer to my suggestion. 她点头回答我的建议。 ③Fallen rocks cut off the only access to the village. 落石阻断了通往村庄的唯一通道。 to have more rice and to produce it more quickly是动词不定式短语作表语，表示对主语的解释说明。若主语部分含有动词do的某种形式，则动词不定式中的不定式符号to可以省略。 ④His aim is to get the first place. 他的目标是取得第一名。 ⑤All I want to do is (to) help him. 我所想要做的就是帮助他。 The tubes were attached to a long stick which helped keep the rocket moving in a straight direction.这些管子被系到一根长棍上，这根长棍可以帮助火箭笔直地运行。 keep sb./sth.doing sth.让……一直做某事。keep用于复合结构，其宾语补足语可以是介词短语、现在分词