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[语境展不]阅读下面句子,并试着归纳puzzle的意思及用法。

1. My sister likes doing crossword puzzles.

2. Scientists have been trying to solve this puzzle for years.

3. The findings of the survey puzzle me — they’ re not at all what I could have expected.

4. Susan' s been puzzling about / over this strange letter for weeks.

[自我归纳]puzzle既可作名词,也可作动词。

★作名词时,意为:①谜,智力游戏(句1) ;②难题,谜般的事物(句2) 

★作动词时,意为 “”,常用于以下结构:puzzle sb.使某人困惑

(句3) ; puzzle about / over sth.苦苦思索,仔细琢磨(句4) 。

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