Question

18．他從來不懷疑如此勤奮是否值得．
He never doubts whether/if it is worth working so hard．．

Answer 1

分析 He never doubts whether/if it is worth working so hard．

解答 答案：He never doubts whether/if it is worth working so hard．這里是一個主從復(fù)合句，說的是客觀事實用一般現(xiàn)在時，主句的主語是he，懷疑doubt，加上頻率副詞never，故He never doubts，余下的作為doubt的賓語從句，連接詞是否whether/if，值得做某事用be worth doing sth，如此勤奮work so hard，故He never doubts whether/if it is worth working so hard．

點評 這里是一個賓語從句的呈現(xiàn)，要注意賓語從句的三要素引導(dǎo)詞，時態(tài)，語序．