______(他为何突然离开) is not known to any of us.Why he left so abruptly①名词性从句。由who,wha

游客2024-05-08  9

问题 ______(他为何突然离开) is not known to any of us.

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答案 Why he left so abruptly

解析 ①名词性从句。由who,what,where.why等连接代词或副词引导的名词性从句可起到名词词组的作用,在句中作主语;②“突然”abruptly/allof a sudden。
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