【題目】按要求改寫下列單詞。

【1】sad（反義詞）____________

【2】did（原形）______________

【3】heavy（比較級）__________

【4】play（過去式）____________

【5】thin（比較級）____________

【答案】

【1】happy

【2】do

【3】heavier

【4】played

【5】thinner

【解析】

【1】sad悲傷的，反義詞是高興的happy，故答案為happy。

【2】did做，原形是do，注意不規(guī)則變化的記憶，故答案為do。

【3】heavy重的，以輔音+y結(jié)尾，變成比較級先把y變成i再加-er，為heavier，故答案為heavier。

【4】play玩，過去式是規(guī)則變化直接+ed，為played，故答案為played。

【5】thin瘦的，重讀閉音節(jié)結(jié)尾，變比較級需要先雙寫最后一個輔音字母再加-er，為thinner，故答案為thinner。

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