主題:主詞動詞的單複數搭配


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    英文文法概念:   1. 英文句子中, 單數主詞 + 單數動詞   (1) One third of the cake is eaten by Tom.單數主詞是One third of the cake,所以單數動詞用is。   (2) Two thirds of the cake is eaten by Tom.單數主詞是Two thirds of the cake,所以單數動詞用is。   注意: à句子(1)(2)中,不論是One third of the cake或Two thirds of the cake. 真正主詞都是the cake(單數),因此動詞都是單數動詞is。   2. 英文句子中, 複數主詞 + 複數動詞   (1) One third of the books are mine.à真正主詞是the books (複數),因此動詞是複數動詞are。   (2) Two thirds of the houses are mine.。à真正主詞是the houses (複數),因此動詞是複數動詞are。

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關鍵字:is複數複數主詞複數動詞arebookcakeeatenofouses