15．The runway for jet planes isfourtimeslonger than the one constructed 15years ago．（long）
噴氣式飛機的跑道的長度是十五年前建成的跑道的四倍長．

分析 four times longer

解答 答案：four times longer．
本句為倍數(shù)表達法的考查，其結(jié)構(gòu)為．"…times+形容詞/副詞的比較級+than …"；故答案為four times longer．
倍數(shù)表達的方式有：
1．"…times+形容詞/副詞的比較級+than …"例如：
This hall is five times bigger than our classroom．這個大廳比我們的教室大 5 倍．
2．"…times+as+形容詞/副詞的原級+as …"例如：
This dictionary is five times as thick as the one you borrowed from the library．
這本詞典的厚度是你從圖書館借的那本（厚度）的 5 倍．
3．"…times+the+名詞（如：size，height，weight，length，width 等）+of …"例如：
The earth is 49 times the size of the moon．地球的體積是月球的49 倍．

點評 做翻譯填空的題目要注意解題步驟：1．分析每道題目需要完成部分的語法屬性　2．劃出已給出部分的中心詞．依據(jù)空格前后成分，確定空格的語法屬性：詞性、單復數(shù)、時態(tài)等．

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