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that… ? It has been found that… ? It turns out that… ? It has been proved that… ? It can be seen that… ? 此外,當(dāng)全句是一般疑問句時(shí),也多用 it 做形式主語(yǔ), 如: ? Is it possible that he will e today? ? ⑵ . wh疑問詞引導(dǎo) ? 由 wh疑問詞引導(dǎo)的名詞從句既可以前置,又可以借助于先行詞 it 而后置。 ? Examples: ? How the prisoner escaped is a mystery. ? It depends on many factors whether infection occurs or not. ? It remains unknown who will e to the meeting. ? 由 whether 引導(dǎo)的名詞從句既可位于句首,又可位于句后;而由 if 引導(dǎo)的從句只能位于主句后。 ? Whether he will e is uncertain. / it is uncertain whether / if he will e. ? ⑶ . 名詞性關(guān)系詞引導(dǎo) ? 由名詞性關(guān)系詞引導(dǎo)的主語(yǔ)從句一般位于句首, ? Examples。 ? What is written in the book should be tested in practice. ? What impressed me most is not what he did, but how he did it. ? Whatever brings about happiness has utility, according to the doctrine of utilitarianism. ? Excises: ? 用主語(yǔ)從句翻譯下列句子。 ? ① 難的是一輩子做好事,不做壞事。 ? ② 理論必須密切聯(lián)系實(shí)際是我們應(yīng)當(dāng)經(jīng)常記住的一條原則。 ? ③ 據(jù)說如果交通運(yùn)輸技術(shù)也像計(jì)算機(jī)那樣飛速發(fā)展的話,今天人們跨越大西洋就只需幾秒鐘了。 ? ④ 確實(shí),自從八十年代以來我們的總體生活水平提高了很多,我們可以夸耀我們?cè)谖镔|(zhì)方面取得的進(jìn)步。 ? ? 起賓語(yǔ)作用的名詞性從句叫做賓語(yǔ)從句。賓語(yǔ)從句通常由連詞 that, wh疑問詞與名詞性關(guān)系詞引導(dǎo)。賓語(yǔ)從句一般置于謂語(yǔ)動(dòng)詞后,但也可作某些介詞與某些具有動(dòng)作意義的形容如 afraid, sure, aware, certain等的賓語(yǔ)。 ⑴ 由連詞 that 引導(dǎo) 的賓語(yǔ)從句在動(dòng)詞 believed, think, know, say, suppose等后面時(shí),連詞 that 可以省略。 ? Example: ? We know foreign languages are useful tools in research work. ? 在帶有賓語(yǔ)補(bǔ)足語(yǔ)的句子中,往往用 it 作形式賓語(yǔ),而將 that從句置于句末作邏輯賓語(yǔ),表達(dá)具體內(nèi)容。 ? Examples: ? We have made it clear that prevention is better than cure. ? We consider it necessary that theory sho