unit 6 重点句子解析。
1. most of you h**e seen movies or plays in a theatre, but h**e you ever been involved in ****** a movie or a play?
involve是及物动词，意为“参与、专心于”，而句式involve in doing sth. 则表示“参与做某事”，如果表示“参与某事”用involve in sth. 即可。
如：did you involve in ****** this new plan? 你参与制定这项新计划了吗？
2. a good script needs to be written.
句中的to be written是不定式的被动结构，need 加上不定式的被动结构表示“需要被做”，此时还可用need 加动名词加以替换。如：
your classroom needs to be cleaned. =your classroom needs cleaning. 你们的教室需要打扫了。
3. comedies make people laugh and feel happy.
make后面可以接名词、代词、不带to的不定式、形容词、过去分词等词语构成的复合结构。如：
we made bill our monitor. 我们选比尔当班长。
the boss makes the workers work long hours every day. 老板迫使工人们每天工作很长时间。
what makes you so happy? 什么事情让你这么高兴？
this made her so frightened. 这件事使他很害怕。
4. my wife and i lead a poor life.
句式lead a … life 意为“过着……生活”，根据不同情况可以在名词life 前可加不同的形容词。如：
lisa is leading a happy life now. 丽萨正过着幸福的生活。
5. why didn’t you ask it for a new house?
句式ask … for … 意为“向……索要或寻求”，而ask for表示“要、请求”。两个句式中介词for后都要加名词或代词作宾语。如：
you can ask li ming for help. 你可以向李明寻求帮助。
6. the fisherman is standing on the coast, looking out towards the sea.
句中的looking out towards the sea 是现在分词短语作状语，用在动词后表示伴随状况。如：
mr. zhou walked into the room, carrying a basket on his shoulder. 周先生肩上扛着一个篮子走进了房间。
7. she also wants all the fish to serve her.
句中的to serve her是动词不定式用在宾语all the fish后作宾语补足语。动词want, ask, tell, order, invite等都可加不定式作宾语补足语。如：
she asked me to help her with her english. 她请我帮她学英语。
bill told li ping to give his best wishes to everybody. 比尔告诉李萍由衷地祝福每个人。
8. some research was done in order to make the play.
当强调不定式所表示的目的时，可用in order to或so as to，这时，in order to 可用于句首，也可用于句中；so as to则只用于句中。如：
in order to master english we must work hard at it.= we must work hard at english in order to master it. =we must work hard at english so as to master it.
为了掌握英语，我们必须努力学习它。
9. without their hard work, we would never get to know so many great stories and stars.
句中的介词短语without their hard work表示条件，意为“没有……”可用条件状语从句替换，在这里它可以替换为：if there isn’t their hard work。如：
we can’t finish the work without your help. =we can’t finish the work if you don’t help us. 没有你们的帮助我们不能完成工作。
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