例：In my opinion，playing video games not only takes much time but is also harmful to health.
就我的看法打电动玩具既花费时间也有害健康。
4. 随着人口的增加 With the increase/growth of the population，
随着科技的进步 With the advance of science and technology，
例：With the rapid development of Taiwan s economy，a lot of social problems have come to pass.
随着台湾经济的快速发展许多社会问题产生了。
5. 是必要的 It is necessary(for sb.)to do / that
是重要的 It is important/essential(for sb.)to do / that
是适当的 It is proper(for sb.)to do / that
是紧急的 It is urgent(for sb.)to do / that
例：It is proper for us to keep the public places clean.
It is proper that we(should)keep the public places clean.
我们应当保持公共场所清洁。
6. 花费spend on sth. / doing sth.
例：我们不应该在我们不感兴趣的事情上花太多的时间。
We shouldn t spend too much time on something we aren t interested in.
7. how 引导的感叹句
例：那至少可以证明你很诚实。
At least it will prove how honest you are.
8. 状语从句
A)如果你不 ，你就会 If you don t ，you ll
例︰If you don t keep working hard，you ll lose the chance.
如果你不坚持努力工作，你就会失去这次机会。
B)如此 ，以至于 so that
例：At that moment，I was so upset that I wanted to give up.
当时，我非常伤心，最后都想放弃了。
C) 每当我听到 我就忍不住感到兴奋。Whenever I hear ，I cannot but feel excited.
每当我做 我就忍不住感到悲伤。 Whenever I do ，I cannot but feel sad.
每当我想到 我就忍不住感到紧张。Whenever I think of ，I cannot but feel nervous. #p#分页标题#e#
每当我遭遇 我就忍不住感到害怕。Whenever I meet with ，I cannot but feel frightened.
每当我看到 我就忍不住感到惊讶。Whenever I see ，I cannot but feel surprised.
例：Whenever I think of the clean brook near my home，I cannot but feel sad.
= Every time I think of the clean brook near my home，I cannot help feeling sad.
每当我想到我家附近那一条清澈的小溪我就忍不住感到悲伤。
9. 宾语从句
我认为， / 我认为 不 I think / I don t think that
我想知道是否 I wonder whether
例：He doesn t think I should stop him joining the club.
他认为我不应该阻止他参加这个俱乐部。
10. Since S 过去式，S 现在完成式。
例：Since he went to senior high school，he has worked very hard.
自从他上高中，他就一直很用功。
