为什么英语中很多时候用of 而不是用所有格 比如 the main idea of the passage 就是of

What's the main idea of the passage? 英语翻译1.The main idea of this passage is that...2.The doctors 英语翻译1.The main idea of the passage is...James Watt first use the main idea of the article是什么意思? a general idea of the passage what's the main idea of this passage?Some ways to remember E 幫忙翻譯幾個英語句子46.What’s the main idea of this passage?It tells u What should I do with this passage?Find out the main idea of Circle the number of the main idea of the text . _______to the main idea of each paragraph. what's the main idea of the Snow of Kilimanjaro? 英语翻译帮忙翻译一下下面的句子：1.what is the main idea of the passage?2.wha