九年级英语unit9导学案

unit9 when was it invented?period ii(listening part)

学习过程】1.听读并理解section a 1b,2a&2b ;section b 2a&2b三遍。（a）家长评价 in the blanks after listening to section a 1b,2a&2b.

(a)a. thewas invented in 1876were invented in 1885. the __wasinventedaround1927wereinventedin1971were invented in 1976.

b. the battery-operated slipper are used forthey are invented___ice cream. it was inventedchelsea lanmon.

potato chips were invented bythey were invented by acalledgeorge crum.

3.把下列句子翻译成汉语(b)

1) life must h**e been difficult when you were a kid.翻译：

2) i bet you didn’t h**e calculators and computers and stuff.翻译：

3) they are used for seeing in the dark.翻译：

4) did you know potato chips were invented by mistake?翻译：

5) george was in a bad mood.翻译：

6) he sprinkled lots of salt on them so they were really salty.翻译。

4.知识重点难点，要认真做哦。(c)a.比较这两个句子。

his life must be very difficult. he doesn’t h**e a must h**e been difficult when you were a child.对过去事情的推测用完成时的形式体现，对现在或将来事情的肯定推测用must+动词原形体现即可。

they mustfinish) the job. they are resting the film. he knows it well.他一定去过上海，他知道上海很多。

b. i think you need to take a history class.

need何时为实义动词，何时为情态动词你能分清吗？翻译下列句子。1）她需要时间和精力。2）她需要休息一下。

3）她不需要参加那次考试。（两种）

总结一下吧看一看这种情况：the flowers needwatering.需要浇呢还是需要被浇？结论：need doing = need to be done

exercises:the bike needsrepair) =the bike needsthe work needsdo) at once.= the work needsat once.

这条狗需要照顾。(两种翻译)

c.观察能知道是什么语法现象吗？

battery-operatedslippersheatedice cream chipsthelostchild这是作定语。观察下面现象。

bridgebuilt 100 years ago.

两种情况有什么不同吗？总结exercises:

1)被tom摔坏的杯是我的。2)我讨厌用铅笔写的信。

d. sprinkle salt撒盐shake saltput salt in the telephonethe tv表示一类事物，你知道还有什么方法表示一类食物吗翻译：树春天变绿。

总结可以表示一类事物。5.翻译下列短语：

我敢打赌。被….所发明。

错误地过去常常现在习惯于被用来做被用来当作从休闲到讲究。

送回心情不好一个叫布莱克的厨师在薯片上洒大量的盐多酷的一个故事呀牌子上说。