13．Not oncehas it occurredto Michael that he could one day become a top student in his class．（occur）
邁克爾成為班里的第一名這樣的情況一次也沒有發(fā)生過．

分析 邁克爾成為班里的第一名這樣的情況一次也沒有發(fā)生過．

解答 答案：has it occurred
解析：根據(jù)前面的not once 提示，本句該使用部分倒裝；另根據(jù)括號內的英文提示可知，本題還考查it occurs to sb that （時態(tài)可以根據(jù)需要進行改變）"某種情況發(fā)生在某人身上；某人突然想起"這一固定句型．根據(jù)前面的once"一詞"可知，倒裝句該使用現(xiàn)在完成時（表達某事到現(xiàn)在為止發(fā)生了多少次時要使用現(xiàn)在完成時）．綜上，本題答案為：has it occurred．拓展：部分倒裝是將句子的謂語一部分提前，如be動詞、助動詞、情態(tài)動詞等；而全部倒裝是將句子的整個謂語提前．

點評 本題考查句子翻譯，做此類題目時一定要根據(jù)中文及英文題干確定需要翻譯的成分，再找出與之對應的英文并考慮各成分是否有形式的改變．

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