cut down砍倒；缩减

cut in插嘴；打断讲话

cut off切断；割掉

cut up切碎 cause招致；导致

lead to导致；通向

bring about导致；带来

result in导致；引起 　　

背教材原句 记句式结构 仿写促落实 1.Of all the mass migrations，that of the North American monarch butterflies is one of the most wonderful.

在所有的大规模迁徙中，北美洲帝王斑蝶的迁徙是其中最精彩的之一。 that指代前面的可数名词 The rent of the suburbs is much lower than that of the downtown.

郊区的房租要比市中心的低很多。 2.Somehow they manage to travel around 4，000 kilometres south and find their way to places where they will spend the winter.

不知为什么它们能向南行进约4 000公里，找到通往越冬地点的道路。 where引导的定语从句 China is an attractive place where foreigners want to live the first time they come.

中国是一个有吸引力的地方，第一次来的外国人想住在这里。 3.However, until recently no one knew how they do this.

然而，直到最近没有人知道它们是怎么做的。 how引导的宾语从句 He carefully showed us how we could pay by scanning the QR.

他细心地为我们展示了如何通过扫描二维码(scan the QR)支付。 4.Unfortunately, human activity is the main reason why the monarch numbers are falling.

不幸的是，人类活动是帝王斑蝶数量减少的主要原因。 why引导的定语从句 The reason why I didn't tell her the result was that it would make her feel sad.

我没有告诉她结果是怕她伤心。 5.The more we know about these delicate creatures, the greater the chance they will survive.

我们对这种精致的生物了解越多，他们生存下来的机会就会越大。 the＋比较级．..the＋比较级 The faster our country develops，the better common people's life will be.

我们的国家发展越快，老百姓的生活就会越好。