Unit 2 Sailing the oceans

④這次空難中多達(dá)一百人喪生。
                           100 people were killed in the air crash.
答案：①as long as    ②as soon as
      ③as far as     ④as many as
重點(diǎn)句型
8. nobody knew that the earth moved westwards 15 degrees every hour, but sailors did know an approximate method of calculating longitude using speed and time.
以前沒有人知道地球每小時(shí)向西移15度，然而海員們確實(shí)知道用速度和時(shí)間來計(jì)算經(jīng)度的近似標(biāo)準(zhǔn)的方法。
①助動(dòng)詞did用于肯定句中，起強(qiáng)調(diào)作用，意為¡°確實(shí)，一定¡±，其后的動(dòng)詞用原形。如果其后跟形容詞，則應(yīng)在形容詞前加be。
i did finish the composition, but i forgot to bring it here.
我確實(shí)寫完作文了，但我忘記帶了。
do be careful when crossing the road! 過馬路時(shí)一定要小心！
②using speed and time是v.�瞚ng短語作狀語，表示方式。意為¡°借助于速度和時(shí)間¡±。
hibernating in that way, the animal can sleep all through the winter.用那種方式冬眠，動(dòng)物就可以睡過整個(gè)冬天。
高手過招
完成句子
①他剛才確實(shí)讀過這封信。
he                this letter just now.
②千萬要小心!
                    careful!
③那個(gè)正在討論的問題對(duì)我們來說很重要。
the question              is important to us.
答案： ①did read
       ②do be
       ③being discussed
9. it proved to be the most accurate and reliable of these early navigational instruments.
在這些早期的航海儀器中，它被證明是最精確和最為可靠的一種。
句中prove為系動(dòng)詞，意為¡°證實(shí)是，后來事實(shí)表明是¡±。其后可以接名詞、形容詞、to be結(jié)構(gòu)或of短語作表語。
聯(lián)想拓展：
prove vt. 證明；證實(shí)；被發(fā)現(xiàn)是
prove sth. 證實(shí)某事
prove that�瞔lause 證明¡­¡­
prove+n.+to be 結(jié)果是；證明為
 how did you prove that he was the robber?
你如何證明他就是那個(gè)強(qiáng)盜？
the play proved (to be) very good.
這場話劇最終被證明不錯(cuò)。
高手過招
完成句子
①你能向我們證明你的理論嗎？
can you                                      ?
②那次天氣預(yù)報(bào)次日被證明是準(zhǔn)確的。
the weather forecast                             on the next day.