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【誤】People who has been invited to the party are very excited.
【正】People who have been invited to the party are very excited.
【析】例句中who在定語(yǔ)從句中作主語(yǔ)，先行詞是people，從句中謂語(yǔ)動(dòng)詞要用have been invited。
2.主語(yǔ)是單數(shù)時(shí)，盡管后面跟有with，together with，but，except，besides，as well as等介詞短語(yǔ)，謂語(yǔ)動(dòng)詞仍用單數(shù)形式。
【誤】Mary,with her brothers,study Chinese in China.
【正】Mary,with her brothers,studies Chinese in China.
【析】Mary在句中是主語(yǔ)，謂語(yǔ)動(dòng)詞要用studies，而不用study。
3.表示學(xué)科名稱(chēng)的名詞maths、physics等為單數(shù)名詞，news為不可數(shù)名詞，他們?cè)诰渲凶髦髡Z(yǔ)時(shí)，謂語(yǔ)動(dòng)詞都應(yīng)用第三人稱(chēng)單數(shù)。
【誤】Physics are difficult for him.
【正】Physics is difficult for him.
【析】physics在句中作主語(yǔ)為單數(shù)名詞，謂語(yǔ)動(dòng)詞應(yīng)用第三人稱(chēng)單數(shù)is。
