托福語法技巧:than/as+代詞+助動詞

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當than或as的前后所用的動詞相同時,常可以用助動詞代替第二個動詞:
    I earn less than he does.
    我比他錢掙得少。
    主句與從句中的動詞不必使用同一時態(tài):
    He knows more than I did at his age.
    他要比我在他這個年齡時懂得多。
    如從句由than/as+I/we/you+動詞組成而時態(tài)并無變化時,常常將動詞省略:
    I’m not as old as you(are).
    我沒有你年齡大。
    He has more time than I/we(have).
    他的時間比我/我們多。
    正規(guī)英語中as/than后仍使用I/we,因為動詞雖被省略,代詞仍被看做是動詞的主語,因此仍用主格。但在非正式英語中,me/us更常用:
    He had more time than me.
    他比我時間多。
    They are richer than us.
    他們比我們富有。
    如than/as后跟he/she/it+動詞,常常保留動詞:
    You are stronger than he is.
    你比他強壯。
    但在極正式的英語中,可以用he/she/they而免去動詞。在非??谡Z化的英語中可用him/her/them而免去動詞。
    這些規(guī)則也適用于副詞比較級:
    I swim better than he does/better than him.
    我游泳比他好。
    They work harder than we do/harder than us.
    他們比我們干得賣勁。
    You can’t type as fast as I can/as fast as me.
    你打字不如我快。