1.It is hotter in Wuhan than in Shanghai summer. 武漢的夏天比上海要熱.此句是對兩地的天氣進行比較,而不是用武漢的天氣同上海這座城市進行比較.因此,Shanghai前面應該有介詞 in,故應改為：It is hotter in Wuhan than in Shanghai in summer.
2.形容詞和副詞最高級交代比較范圍時要注意恰當使用介詞.表示“類的范圍”用介詞“of”；表示“整體的范圍”用介詞“in”.
China is the largest country of Asia.中國是亞洲最大的國家.應改為：China is the largest country in Asia.
3.In all the boys he did his homework most quickly.在所有的男孩子中,他完成家庭作業(yè)最快.應改為：Of all the boys he did his homework most quickly.
你第一題題目打錯了……是summer…….給點分吧……看在我這么認真作答的“面子”上……