那些想旅行的孩子，都因旅行的取消而感到失望。

　　That they will get married, which has not been announced, has spread around.

　　他们要结婚的消息还没有被宣布，却已经被传得沸沸扬扬。

　　2．非限制性定语从句的先行词既可为单个的名词或代词，也可为整个句子或其中一部分，且常译成并列的分句。

　　We'll graduate in July, when we will be free. (先行词为名词)

　　我们将于七月份毕业，到那时我们就自由了。

　　He often comes to school late, which makes his teacher angry.(先行词为主句的内容)

　　他经常上课迟到，这使得他的老师很生气。

　　[即时演练1]　补全句子

　　①(2016·江苏高考改编)Many young people, most_of_whom_were

_well­educated,_headed for remote regions to chase their dreams.

　　很多年轻人，他们中的大多数受到了良好的教育，都到偏远地区去追逐自己的梦想。

　　②(2016·浙江高考改编)Scientists have advanced many theories about why human beings cry tears, none_of_which_has_been_proved.

　　就人类为什么哭科学家提出来许多理论，但没有一项理论得到过证明。

　　③(2016·天津高考改编)We will put off the picnic in the park until next week, when_the_weather_may_be_better.

　　我们将会把去公园野餐的时间推迟到下周，那个时候天气可能会更好一些。

　　二、引导非限制性定语从句的关系词

　　1．关系代词

　　which 指物，在从句中作主语，宾语或表语；who/whom指人，who在从句中作主语，而whom在从句中作宾语；as既可指人也可指物，在从句中作主语，宾语或表语；whose既可指人也可指物，在从句中作定语。

　　He wasn't unconscious, as could be judged from his eyes.

　　他并未失去知觉，这从他的眼神可以判断出来。

　　Mr. King, whose legs were badly hurt，was quickly taken to hospital.

　　金先生的腿受了重伤，他很快就被送去医院了。

　　2．关系副词

　　when指代时间，在从句中充当时间状语，可与"介词＋which"互换；where指代地点，在从句中充当地点状语，可与"介词＋which"互换。

　　We will put off the outing until next Sunday, when/on which we won't be so busy.

　　我们把郊游推迟到下个星期天，那时我们就不会那么忙了。

　　Yesterday, they went out to have a picnic in the park, where/in which they had a good time.

昨天，他们出去在公园里野餐了，在那里他们玩得很开心。