unit 5 canada-“the true north ”第5单元 加拿大-真正的北方（重点句型）
1. rather than take the aeroplane all the way, they decided to fly to vancouver and then take the train from west to east across canada.
rather than... 是……而不是……；与其……不如……；不愿
he ran rather than walked.他是跑的而不是走的。
rather than allow the vegetables to go bad, he sold them at half price. 与其让蔬菜烂掉，他不如半价把它们卖掉。
do a rather than do b = rather than do b, sb. does a 某人不做b却做a
a rather than b是a而不是b
would rather do a than do b = would do a rather than do b 宁可做a而不做b
prefer to do a rather than do b 最喜欢做a而不做b
would rather sb. did/had done sth. 宁愿某人做某事
rather than表示客观事实，它连接的并列成分可以是名词、代词、形容词、介词(短语)、动名词、分句、不定式、动词等。后接不定式时，不定式可以带to，也可以不带to。但rather than位于句首时，则只能接不带to 的不定式。
①rather than@(ride) on a crowded bus, he always prefers (ride) a bicycle.
②i’d rather you (not come) yesterday.
③i think tom, rather than you, (blame).
答案：(1) ①ride; to ride ②hadn’t come ③is to blame
(2) ①he came running all the way rather than walking.
②she likes to keep things in the house rather than throw them away, though many are useless.
2. it is so wet there that the trees are extremely tall, some measuring over 90 metres. 那儿的湿度很大，所以树都长得特别高，一些高达90多米。
some measuring over 90 metres 是独立主格结构。
构成形式：名词(代词) + 现在分词/过去分词/形容词/副词/不定式/介词短语。
the meeting over, they left the hall. 会议结束了，他们离开了大厅。
my watch having been lost, i didn’t know what time it was.我的表丢了，我不知道几点钟了。
time permitting, i shall go to the cinema with you. 如果时间允许的话，我会和你一起去看电影。
mary entered the room, her hands in her pockets. 玛丽走进房间，手放在口袋里。
①the test (finish), we began our holiday.
②weather (permit), we are going to visit you tomorrow.
①he came into the room, his ears (冻得发红).
②he came out of the library, a book (夹在胳膊下).
(2)①red with cold ②under his arm