语动词中含有can/may等情态动
词; • 3)主句的谓语动词中含有want, wish, hope等
动词; • 4)主句是祈使句。例如:
同义句转换
• 1、If you use your head, you'll find a way.
It will be a pity if we leave him alone at home.
• =if you get up late, you will be late for school.
结构曲
• 结构曲:if是从属连词，意为‘如果”，用 4、If there is no water, the fish will die.
It will be a pity if we leave him alone at home.
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