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al ist culture art globe physics universe chemistry agriculture biology mathematics science cultural global universal agricultural mathematical artist physicist chemist biologist scientist C A C B Answer key for exercise 2: Answer key for exercise 3: fundamental, astronomy, gave birth to, existed, As a result, atoms, prevent … from, puzzle emotional words calm words Answer key for exercise 4: violent angry rude shocked excited crazy patient gentle relaxing kind easygoing calm Presentation 主語從句 ( Noun Clauses as the Subject) 定義: 用作主語的從句叫主語從句,它是名詞性從句之一。引導主語從句的連接詞有:連詞 that, whether; 連接代詞 who, what和 which; 連接副詞 when, where, how和 why。 2) 由連詞 that引起的主語從句: That they are badly in need of help is quite clear. 他們急需幫助,這是十分明顯的。 3) 由連接代詞或連接副詞以及 whether引起的主語從句。 4) whatever, whoever也可引導主語從句。 Whoever makes mistakes must correct them. 凡犯了錯誤的人都必須改正。 例如 : It is a pity that she has made such a mistake. 她犯了這樣一個錯誤 , 真是遺憾。 人們相信 …… It is suggested that... 有人建