Question

句型轉(zhuǎn)換

He started dancing at the age of four. (改為同義句)

He started dancing ________ he was________ ________ ________.

Answer 1

答案：when;four;years;old
解析：

at the age of意為“在……歲時(shí)”，其后跟年齡數(shù)，相當(dāng)于when引導(dǎo)的時(shí)間狀語從句。句意為“他從4歲時(shí)就開始跳舞了”。