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      當(dāng)前位置:考試網(wǎng) >> 英語(yǔ)四級(jí)考試 >> 詞匯語(yǔ)法 >> 模擬試題 >> 2017上半年英語(yǔ)四級(jí)考試必備語(yǔ)法知識(shí)(4)

      2017上半年英語(yǔ)四級(jí)考試必備語(yǔ)法知識(shí)(4)

      考試網(wǎng)   2017-06-07   【

        形容詞able的用法說(shuō)明:

        1.表示“有能力的”、“能干的”,可用作表語(yǔ)或定語(yǔ)。如:

        He is an able manager. 他是位有能力的經(jīng)理。

        He is old but still able. 他雖年老,但仍有很能干。

        2.用于 be able to do sth(能或會(huì)做做某事)。如:

        He is able to speak English. 他會(huì)說(shuō)英語(yǔ)。

        Everyone here is able to type. 這兒的每一個(gè)人都會(huì)打字。

        He will be able to get about in a week or two. 再過(guò)一兩個(gè)星期左右他就能走動(dòng)了。

        He studied hard and was able to pass his examinations. 他學(xué)習(xí)很努力,所以考試及了格。

        注:be able to 不僅有多種時(shí)態(tài)形式(通常不用于進(jìn)行時(shí)或與 be going to 連用),而且還可以與某些情態(tài)動(dòng)詞連用(通常不與 can 連用),甚至還可以有非謂語(yǔ)形式。如:

        Since his accident he hasn't been able to leave the house. 自出事之后,他一直未能離開家。

        You might be able to persuade him. 你也許能夠說(shuō)服他。

        I hope to be able to do the work. 我希望能干得了這項(xiàng)工作。

        I regret not being able to help her. 我很遺憾未能幫助她。

        3.able 的比較級(jí)和最高級(jí)通常是abler和ablest,也可以是more able和most able,有時(shí)還可用 betterable和best able.如:

        You are better able to do it than I (am). 你比我更有能力做這件事。

        She's the person best able to cope. 她是個(gè)最能妥善處理問(wèn)題的人。

        4.若要加強(qiáng)語(yǔ)氣,其前除可very,quite,perfectly等修飾外,有時(shí)還可用well修飾。如:

        He is quite [well] able to take care of himself. 他完全有能力照顧自己。

        He's a very able student; he's just too lazy. 他是個(gè)很有能力的學(xué)生,只是太懶了。

        若受just,only just修飾,則表示“只能”“僅能”。如:

        I was just able to make out a dark figure in the distance. 我只能看見(jiàn)遠(yuǎn)處有個(gè)黑影。

        5.able的反義詞是unable(不能的,不會(huì)的),不是disable,后者是動(dòng)詞,其意為“使殘廢”“使無(wú)能力”。比較:

        They were unable to reach a decision. 他們沒(méi)法做出決定。

        Now that he was disabled, his house had become a prison to him. 因?yàn)樗麣垙U了,他的房子就成了他的牢籠。

      糾錯(cuò)評(píng)論責(zé)編:Aimee
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