89课知识点
一．单词讲解
1.believe 相信，认为
1).believe+that 从句（宾语从句） eg.He
believes that nothing is impossible.
2).believe in sth相信某物的存在
eg.Do you believe in ghosts?
3)believe in sb 相信某人，相信某人的存在
eg.Do you believe in God?
4)believe it or not信不信你(常用语口语)
5） make believe假装，装作
2.may 情态动词（用于请求许可）可以
eg.May I sit down?
May I use you phone ？
问句的回答通常用 Certainly\Yes ,please\Why not ?\Sure 表示同意，许可。
不同意则用 No I’m sorry\I ’m afraid you not 等3.how long多少
1）多长（时间的长短）
----How long has he worked here?
2）物体的长度
3）How long is this desk ?
4）与how相关的特殊疑问词
How often多久，经常（问频度）
eg.----How often do you go swimming?
----I go swimming three times a week .
How soon 多久
eg.How soon will you come back?
4.why 为什么 (其问句是由because引导的原因状语从句)
5.because 因为（连词，引导原因状语从句）
because of 因为（其后跟名词，代词等作宾语,不接从句）6.sell 卖，出售
sell sth to sb=sell sb sth
He sold his house to a banker =
7.比较 cost 和 spend
cost 1.v 花费（金额，费用）其主语经常为物
eg.This jacket costs 200 dollars.
cost sb+n
1）花了某人多少钱
This pen costs me 2 yuan.
2）使某人付出（时间，劳力，生命等）
Careless driving will cost you your life .
2.n.代价，价格，费用，经费
The cost of this desk is $55.
the cost of living生活费用
spend 花，其主通常人
spend money on⋯ ..在⋯ ..花
I spent $20 on this book
spend time in doing ⋯..在⋯花
He spends most of his time in traveling
8.比 worth worthy worthwhile
1)worth⋯.多少
be worth +n( 当名次金，表示⋯⋯ .)
be worth doing sth 得做某事
eg.Her suggestion is worth considering.
2)worthy adj得⋯ 的
be worthy of +n./doing ⋯ .得⋯
The question is worthy of being
discussed be worthy to do 得做⋯ .
The method is worthy to be tried
3)worthwhile adj. 得花，金的 a
worthwhile task 得做的工作
二．重点法
1.For 和 since 在在完成中的运用
1）for 表示（一段），而 since 表示自从⋯ .以来，常构： for+ 一段
since+一段 +ago/since+一个点 /since+从句
eg.He has lived here for 20 years.
He has lived here since 1982.
He has lived here since 20 years ago.
2)除了for, since 以外，常和现在完成时的连用的副词还有
already，ever，never，just，yet，in the past few years，over the last thirty years ， so far up to now ,since 1980 等 .
eg.Most colleague students have learned English for more than 6 years 许多大学生已经学英语六年多了
Great changes have taken place in China in the past few years.在过去几年中，中国发生了巨大的变化.
I have never been abroad up to now . 到现在为止我还没有出过
国
3)在现在完成时中，already 和 yet 的区别：
already 常用于肯定句中或句末，yet 常用于一般疑问句或否
定句末，但表示惊讶时，也可以用于疑问句。
eg Tom has already finished his homework.
Tom didn ’tfinished his homework yet ?
What！ Have you already finished it?
2.宾语从句一般是由名词或代词充当的，宾语一般在动词或
介词的后面。
eg.I want an apple.(作的宾语)。
I like you.(作的宾语)
in front of the window(作的宾语) . some of them（作的宾语）
用作宾语的从句叫宾语从句，即充当宾语成份的不是一个单
词或词组，而是一个句子。
主语从句：一个句子充当主语
定语从句：一个句子作定语
状语从句：充当状语成份的是一个句子
表语从句：充当表语成份的是一个句子
宾语从句一般跟在两类词之后
第一类：表示人的情感或心理活动的形容词
afraid /sure/sorry/glad
这样句子的结构是：主语+此宾语 +宾语从句
eg I’m afraid that I can ’thelp you at moment.
They are sure that they will win the match.
He is sorry that he didn ’tgo yesterday.
第二类 :普通动词
think/know/believe/say/hope/understand
这样的句子结构是：主语+这类动词 + 宾语从句
eg I think that you will pass the exam .
I believe I can fly.
引导宾语从句的关联词有从属连词，疑问代词，疑问副词，
合接代，合接副等。
eg I am afraid that you can ’tsee him today( 关是从属that)。
在非正式文体中，关that 常被省去
eg I hope you can come tomorrow(that 被省略 )。
I don ’tknow what he if you can help me .( 从属if) I wonder what he is writing to me about.( 疑代 what)三．本小
⋯.is for sale待售
have a look (at⋯.)看一看⋯..
in the country在下
how much does ⋯cost?花⋯ .，⋯.
be worth得
I can’tdecide我不能决定
have the last word最后拍板。