Unit6 When was it invented
一、英语中的两种语态：
1.主动语态：主语是动作的执行者。
We planted the tree.
2.被动语态：主语是动作的承受者。
The tree was planted by us.
二、被动语态的基本结构：be+过去分词， 其中be动词根据时态要变化。
一般现在时的被动语态：am/is/are+过去分词
Chinese _____ ____________by many people nowadays（现今）.（speak）.
一般过去时的被动语态：was/were+过去分词
The dog_______ ____________ last night（find）.
三、主动语态变被动语态方法
He washes his car every day.
1.找宾语。将句子的宾语改为主语，注意大小写（宾变主）。
His car________
2.找谓语。将谓语变为be+过去分词，判断谓语的单复数、时态。
His car is washed________
3.找主语。将原句的主语变为by+主语的宾格（主变宾）。
His car is washed by him every day.
四、重要知识点
day 日，天——daily 每日的，日常的
accident意外，事故——accidental意外的，偶然的
rule统治——ruler统治者
music音乐——musical音乐的
salt盐——salty咸的
hero英雄（单数）—heroes英雄（复数）
My pleasure! 我的荣幸
With pleasure! 乐意效劳
think about 考虑，思考
think of 想到，想起
by accident 意外地，偶然地
by mistake 不小心，错误地
drinking water 饮用水
fall into 掉入，掉进
produce a nice smell 散发出一种清香
It’s believed that…人们相信…. 人们认为….
It’s said that…据说
take place发生，出现
without doubt 毫无疑问，的确
at a low price以低价
at a high price以高价
translate …. into … .把…译成…
divide ….into…. 把…..分开
all of a sudden 突然（的 ）
in the end 最后，终于
at the same time 同时
stop…. from doing sth 阻止….做某事
get ….into….把…..放入…..
not only…. but also…. 不但…..而且….
more and more越来越（多）
look up to钦佩，仰慕
encourage sb to do sth 鼓励某人做某事
achieve one’s dream 实现梦想
in style 流行，时尚地
out of style 过时地
Don’t mention it 不客气 不用谢 没关系
boil up 煮沸 烧开
remain calm 保持冷静
a Chinese ruler 一位中国统治者
over an open fire 在一堆明火上
the national drink 国民饮料
the popularity of tea 茶叶的普及
a much-loved and active sport 一项深受喜爱和活跃的运动
work together 合作
more than 多于， 超出
less than 少于
teach sb to sth 教某人做某事
stop sb from doing sth
=prevent sb from doing sth
= keep sb from doing sth 阻止某人做某事
seem +adj.
seem + to do
seem + that + 从句
the first to do sth. 第一个做某事的人
even though 即使
dream of doing sth.梦想做某事
the number of … ......的数量（谓语—单数）
A number of… 许多（谓语—复数）
五、作文：
The invention of computer
As we all know,computers are becoming more and more important in our daily life. Do you know when the computer was invented
The computer was invented in 1946. At that time, it was huge. Now they are small. The computer is a very useful tool in our life. For example, it can send some messages .We can also listen to music or play the game on computers. It makes us relax.
I think computers are very useful,it is a great invention.

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