Unit 3 Tomorrow’s world单元复习学案
(回归课本p58)during their journey，the professor and his nephew come across the central sea，a big underground ocean.
在旅途中，那位教授和他的侄子遇见了the central sea，一个大的地下海洋。
归纳拓展
例句探源
①(牛津p386)she came across some old photographs in a drawer.她在抽屉里偶然发现了些旧照片。
②(朗文p384)your point really came across at the meeting.
大家在会上确实理解了你的观点。
③some candidates simply do not come across well on screen.
有些侯选人在屏幕上给人的印象就是不好。
【温馨提示】
表示“意外，偶然遇到”的短语还有：
happen to meet
chance to meet
meet with
meet sb./sth.by chance
meet sb./sth.by accident
【注意】 come across 后虽可跟宾语，但不能用于被动语态。
15.用come相关短语的适当形式填空：
(1)it ________ ________ that he had been stealing from his friends.
答案：came out
(2)when she ________ ________ ________，she found herself lying in bed.
答案：came to herself
(3)i have just ________ ________ an old friend.
答案：come across
句型解析
1【教材原句】 upon reaching the top of the mountain，a feeling of happiness and a sense of achievement will be experienced.(p42)
到达山顶时，观众会体验到一种愉快感和成就感。
【句法分析】 upon/on＋n./doing...表示“一……就……”。
on my arrival in shanghai，i went to see him.
我一到上海就去看他。
表示“一……就……”的句型
as soon as/once＋从句
the moment/the minute＋从句
immediately/directly/instantly＋从句
no sooner...than/hardly...when/scarcely...when
16.一句多译
我一到家就发现他们已经离开了。
_________________________________，
__________________________________，
___________________________________，
i discovered they had gone.
答案：(1)on/upon arriving home (2)as soon as/the moment/the minute i arrived home (3)immediately/directly/instantly i arrived home
2【教材原句】 scared and cold，the time traveller starts back towards the present.(p58)
由于害怕和寒冷，时光旅行者动身返回现代。
【句法分析】 scared and cold为形容词短语作原因状语。在描绘性文字中，形容词(短语)或形容词化的分词有时起状语的作用，说明主句所述的原因、时间或主语所处境况或意义增补。
(1)表原因
表原因的形容词(短语)或形容词化的分词多放在句首，句子的主语亦是其逻辑主语。表原因的形容词(短语)相当于原因状语从句。
①thirsty and eager to have a rest，he went into a teahouse.
由于口渴，而且想要休息一下，他走进了一家茶社。
(2)表时间
形容词(短语)表主句所述发生的时间，放在句首。其作用相当于一个时间状语从句。
②ripe(＝when they are ripe)，the oranges taste sweet.
这些橘子熟了时，味道甜美。
(3)说明主语的境况或意义增补
形容词(短语)表示主语所处境况或意义增补时，常放在句末，相当于一个和主句并列的句子。
