"it+be+名词+to+do+sth."通常表示"某事/某物是做某事的/做某事的时候需要某物"。翻译可以根据具体语境而定,以下是一些例句的翻译:
- It is important to study English well.(学好英语很重要。)
- It is necessary to wear a helmet when riding a bike.(骑车时必须戴头盔。)
- It is common for people to use mobile phones nowadays.(现在人们使用手机很普遍。)
- It is difficult for me to understand this math problem.(我很难理解这个数学问题。)
- It is polite to say "thank you" after receiving a gift.(收到礼物后说“谢谢”是有礼貌的。)
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