高二英語——名詞性從句精講精練
他建議我們坐火車去。
（4）有時(shí)可用namely, that is to say, in other words, that is, i.e. (=that is), for example等引出同位語，說明其前面的名詞或代詞。
1) he told us the good news, namely, the museum is open to all.
他告訴了我們這個(gè)好消息：博物館對(duì)外開放了。
2) there is only one way of improving your english, that is, to practice more.
要提高你的英語水平只有一個(gè)辦法，那就是多練。
對(duì)比與用法
同位語從句和定語從句的區(qū)別：
① that引導(dǎo)定語從句時(shí)，為關(guān)系代詞，代指先行詞，有實(shí)際意義，在句子中充當(dāng)句子成分，作賓語時(shí)可以省略；定語從句對(duì)名詞加以限制。
② that引導(dǎo)同位語從句時(shí)，起連詞的作用，沒有實(shí)際意義，不充當(dāng)句子成分，一般不能省略。同位語從句對(duì)名詞加以補(bǔ)充說明。
試比較下面兩個(gè)例句:
1) i had no idea that you were here.（that引導(dǎo)同位語從句，不能省略）
2) the news (that) you told me yesterday was really disappointing. （that引導(dǎo)定語從句，作賓語，可以省略）
exercises:
1.___ is known to us all, william had broken his word ___he would give tom a rise.
a. as; that b. it; what c. it; that d. as; which
2. what do you think of the suggestion that we ___lunch at the new restaurant?
a. will have b. are going to have
c. would have d. have
3. according to bill gates, the idea ___we can play video and receive e-mail without sitting at a keyboard will come true. however, it is unclear ___it will be on sale and ___it will cost.
a. which; that; what b. /; whether; how much
c. that; when; what d. that; that; how much
4. along with the letter was his promise ___he would visit me the coming month.
a. which b. that c. what d. whether
5. there is a feeling in me ___we’ll never know what a ufo is.
a. that b. which c. of which d. what
6. there is a new problem involved in the popularity of private cars ___road conditions need___.
a. that; to be improved b. which; to be improved
c. where; improving d. when; improving
答案：1. a 2. d 3. c 4. b 5. a 6. a
【模擬試題】（答題時(shí)間：40分鐘）
一、完形填空
today was the day of trying the new boat on the river. nella jumped out of bed, got dressed quickly and woke up her brother jed.
after 1 nella and jed arrived at the river bank and 2 the new blue boat waiting for them. they got into the boat and packed their picnic under the 3 . nella started the engine and 4 they went into the wide, brown and unknown 5 of the river.