20．You mustapologize（道歉） to your mother for being so rude．

分析 你必須為你的粗魯向你媽媽道歉．

解答 答案是apologize．本題考查語境中選用恰當?shù)脑~的適當形式．a(chǎn)pology n．道歉；apologize vt．道歉；apologize to sb．for sth．因為某事而向某人道歉；題干中情態(tài)動詞must 后面需要動詞原形，故答案是apologize．

點評 翻譯填空要根據(jù)所提供的漢語意思結(jié)合語境和句子結(jié)構(gòu)選擇恰當?shù)脑~、短語或句型；同時注意句子結(jié)構(gòu)和所選詞的形式變化．

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