Question

1．眾所周知紙是由木頭制成的．
It's well known that paper is made from wood．

Answer 1

分析 It's well known that paper is made from wood．

解答 答案：It's well known that paper is made from wood．這里是一個(gè)陳述句，說(shuō)的是客觀事實(shí)，用一般現(xiàn)在時(shí)，表示…是眾所周知的用句型It's well known that，it作為形式主語(yǔ)，真正主語(yǔ)是that從句，紙是由木頭制成的，看不出原材料，故用be made from，木頭wood 紙paper不可數(shù)，故答案是It's well known that paper is made from wood．

點(diǎn)評(píng) It+be+過去分詞+主語(yǔ)從句，用it作為形式主語(yǔ)，真正主語(yǔ)是that從句，這類過去分詞有：announced，believed，expected，hoped，decided，reported，said，shown等，如：
It is reported that 16 people were killed in the earthquake．