16、世上沒(méi)有什么比…更令我高興。

Nothing in the world can delight me so much as…

例︰世上沒(méi)有什么比到快餐店吃漢堡更令我高興。

Nothing in the world can delight me so much as having hamburgers in fast-food restaurants.

17、…是必要的：It is necessary that S(should)V

…是重要的：It is important/essential that S(should)V

…是適當(dāng)?shù)模篒t is proper that S(should)V

…是緊急的：It is urgent that S(should)V

例︰我們當(dāng)保持公共場(chǎng)所清潔是應(yīng)當(dāng)?shù)摹?/p>

It is proper that we(should)keep the public places clean.

18、每當(dāng)我聽(tīng)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︰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。

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.

19、據(jù)說(shuō)…

It is said(that)子句

一般認(rèn)為…

It is thought(that)子句

大家都知道…

It is known(that)子句

據(jù)報(bào)導(dǎo)…

It is reported(that)子句

一般預(yù)料…

It is expected(that)子句

一般估計(jì)…

It is estimated(that)子句

一般相信…

It is believed(that)子句

例︰一般相信閱讀增加我們的知識(shí)、擴(kuò)大我們的心胸。

It is believed(that)reading increases our knowledge and broadens our mind.

20、…的主要理由是…

The main reason why…is(that)子句

例︰青少年犯罪的主要理由是社會(huì)環(huán)境日一敗壞。

The main reason why the juveniles commit crimes is that social environment is becoming worse.