1．You needn't hand in your homework before 9o'clock this morning．（同義句的轉(zhuǎn)換）
→Youdon't need to hand in your homework before 9o'clock this morning．

分析 你今天早晨9點前不必交家庭作業(yè)．

解答 答案是don't need to；本題考查同義句轉(zhuǎn)換；原題中needn't為情態(tài)動詞，后接動詞原形；need還可以是實意動詞；本題中的needn't do可以轉(zhuǎn)換成need充當實意動詞的短語don't need to do；故答案是don't need to．

點評 本題考查句型轉(zhuǎn)換，要按照題干的要求選擇適當?shù)木湫�，結(jié)合語境和相應(yīng)的語法知識進行句式的變化．

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