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1、。注意 if 条件句的时态搭配1if 从句用一般现在时,主句用一般将来时If he runs , he llget there in time.如果他跑,他就会及时赶到那儿。The cat will scratch you if you pull her tail.如果你拉猫的尾巴,它就会抓你。2if 从句用一般现在时,主句用may/might/canIf the fog gets thicker, the plane may/might be diverted.如果雾在大一些,飞机可能就会改在别的机场降落。If it stops snowing, we can go out.如果雪停了,我们
2、就可以出去。3if 从句用一般现在时,主句用must/shouldIf you want to lose weight,you must/should eat less bread.如果你想减肥,你必须少吃面包。4if 从句用一般现在时,主句用一般现在时If you heat ice, it turns to water. (也可用 will turn)如果把冰加热,它就会化成水。5if 从句用现在进行时,主句用一般将来时If you are looking for Peter,you llfind him upstairs.如果你是在找彼得,上楼就会找到他。6if 从句用现在完成时,主句用一般将来时-可编辑修改 -。If you have finished dinner,Illask the waiter for the bill.如果你吃完了,我就叫服务生来算账-可编辑修改 -