4. 隨著人口的增加…… With the increase/growth of the population，…

　　隨著科技的進步……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.

　　隨著臺灣經(jīng)濟的快速發(fā)展許多社會問題產(chǎn)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 …

　　…… 是適當(dāng)?shù)?It is proper(for sb.)to do / that …

　　……是緊急的 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.

　　我們應(yīng)當(dāng)保持公共場所清潔。

　　6. 花費spend … on sth. / doing sth. …

　　例：我們不應(yīng)該在我們不感興趣的事情上花太多的時間。

　　We shouldn't spend too much time on something we aren't interested in.

　　7. how 引導(dǎo)的感嘆句

　　例：那至少可以證明你很誠實。

　　At least it will prove how honest you are.

　　8. 狀語從句

　　A)如果你不……，你就會…… If you don't …，you'll …

   　9. 賓語從句

　　我認(rèn)為，…… / 我認(rèn)為……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.

　　他認(rèn)為我不應(yīng)該阻止他參加這個俱樂部。

　　10. Since + S + 過去式，S + 現(xiàn)在完成式。

　　例：Since he went to senior high school，he has worked very hard.

　　自從他上高中，他就一直很用功。

　　例︰If you don't keep working hard，you'll lose the chance.

　　如果你不堅持努力工作，你就會失去這次機會。

　　B)如此……，以至于…… so… that …

　　例：At that moment，I was so upset that I wanted to give up.

　　當(dāng)時，我非常傷心，最后都想放棄了。

　　C) 每當(dāng)我聽到……我就忍不住感到興奮。Whenever I hear …，I cannot but feel excited.

　　每當(dāng)我做……我就忍不住感到悲傷。 Whenever I do …，I cannot but feel sad.

　　每當(dāng)我想到……我就忍不住感到緊張。Whenever I think of …，I cannot but feel nervous.

　　每當(dāng)我遭遇……我就忍不住感到害怕。Whenever I meet with …，I cannot but feel frightened.

　　每當(dāng)我看到……我就忍不住感到驚訝。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.

　　每當(dāng)我想到我家附近那一條清澈的小溪我就忍不住感到悲傷。