Unit 8 Keeping Safe教案
unit 8 keeping safe一. 教學內容：
unit 8 keeping safe
二. 教學重點：
1、祈使句
2、被動語態
3、課內知識點
三. 具體內容：
（一）祈使句：
肯定結構：
1. do 型（即：動詞原形（＋賓語）＋其他成分）
please have a seat here.
2. be 型（即：be＋表語＋其他成分）
be a good boy!
3. let 型（即：let ＋賓語＋動詞原形＋其他成分）
let me help you.
否定結構：
1. do 型和be 型的否定形式都是在句首加don’t構成.
don’t forget me!
2. let 型的否定形式有兩種: don’t ＋ let ＋賓語＋動詞原形＋其他成分
let ＋賓語＋not＋動詞原形＋其他成分
don’t let him go./ let him not go.
3.有些可用 no 開頭，用來表示禁止性的祈使句.
no smoking!
no fishing!
祈使句的反意疑問句：
1. 祈使句為肯定句式，其反意疑問句表示請求時，用will you, 表示邀請、勸說時，用won’t you.
be sure to write to us, will you?
come to have dinner with us this evening, won’t you?
2. 祈使句為否定句式，反意疑問句用will you.
don’t smoke in the meeting room, will you?
3. let 開頭的祈使句在構成反意疑問句時，除let’s用shall we外，其他都用will you.
let the boy go first, will you?
let’s take a walk after supper, shall we?
（二）被動語態：
1. 一般現在時：am/is/are +done
the book is read by children.
2. 一般過去時：was/were +done
he was taken to the hospital yesterday.
3. 一般將來時：will be +done/ be going to be +done
the strawberry will be frozen in three hours.
dinner is going to be cooked at 6 o’clock.
4. 情態動詞+be+ done
the meat should be kept in a fridge.
注意：
1、帶雙賓語的主動句子變為被動語態時只能將一個賓語變為主語。
we are taught english by her.
english is taught to us by her.
the coat was bought for me.
2、主動語態不帶to的不定式變被動語態要還原to.
the boss made him work over 12 hours a day.
he was made to work over 12 hours a day.
3、短語動詞用于被動語態應作為一個整體，不能分開。
the meeting has been put off.
（三） 語言點：
1. keep away from 遠離
mother told him to keep away from drugs.
媽媽讓他遠離毒品。
2. short-cut 捷徑
don’t take short-cuts through empty buildings or parking lots.
不要從空曠的大樓或停車場那里抄近路。
3. avoid doing… 避免做……
they all avoid mentioning that name.
他們都在避免提到那個名字。
4. knock down 撞倒，擊倒
jim knocked down a little girl when he was running in the street.
吉姆在街上跑時撞倒了一個小女孩。
unit 8 詞組/短語
1. encourage sb. to do 2. stand for