When was it invented教案
橋正在被他們修理。
2.主、被動時態對照表：
時態/動詞形式
主動態
被動態
一般現在時
keeps
is kept
現在進行時
is keeping
is being kept
一般過去時
kept
was kept
過去進行時
was keeping
was being kept
現在完成時
has kept
has been kept
過去完成時
had kept
had been kept
一般將來時
will keep
will be kept
虛擬語氣
would keep
would be kept
3. 本單元出現的被動語態
who was it / were they invented by?
它（它們）是由誰發明的？
it was / they were invented by … + sb.
它（它們）是由……發明的。
when was it / were they invented by?
它（它們）是什么時候被發明出來的？
it was / they were invented … + time
它（它們）是……被發明出來的。
what is it / are they used for?
它（它們）有什么用途呢？
it is / they are used for + doing sth.
它（它們）被用來……。
任務ⅱ. 請用下列詞匯編幾組特殊疑問句。（用被動語態）
electric slippers, adjustable heels, tea, microwave ovens, potato chips
1.__________________________? (when)
2.__________________________? (when)
3.__________________________? (what)
4.__________________________? (who)
5.__________________________? (who)
任務ⅲ. 請仿照sample，編三組對話介紹中國的四大發明吧�。� four great inventions ）
clues:
what: paper making
wh cai lun
when: one thousand eight hundred years ago
what…for: record information
a: what do you think is the most important invention?
b: that is paper making.
a: who was it invented by?
b: it was invented by cai lun.
a: when was it invented?
b: it was invented one thousand eight hundred years ago.
a: what is it used for?
b: it is used for recording information.
下面的表格將幫助你完成編對話。
the names of inventions
when
who
be used for
gun powder
tang dynasty
don’t know
exploding, war, fireworks
compass
war dynasty
chinese people
knowing the direction
printing
one thousand ,three hundred years ago
bi sheng
printing
paper making
one thousand eight hundred years ago
cai lun
recording information
任務ⅳ. 閱讀理解
future computer
do you forget to turn off the lights and heateas when you go out of a room? in it will not matter. they will turn themselves off and on again when your return. you will choose the temperature for each room the lighting and the humidity. (濕度) a sensor will detect ( 察覺) the presence of a human ( and, with luck, ignore ( 忽略 ) the dog!) and turn the systems on, and when the humans leave it will turn them off again.