3) He is certain to come. ________________, he's already accepted the invitation.

4) ---Do you know our city _____________? ---No, this is the first time I have been here.

5)_____________, let me introduce myself to you.

6) We should never waste anything, ________________, time.

3. Never mind

(回归课本) Never mind. Nobody is said to have finished till there's no more left to buy. (P5)

品味典例：

1) Never mind what people say. 2) Never mind; it isn't far, we'll walk.

归纳拓展：

1) never mind不必担心；没关系

2) make up one's mind to do sth.下决心做某事 keep one's mind on...把心思放在......上

change one's mind改变主意 keep/bear/have......in mind 记住，记在心里

即景活用：完成下列句子

1) _________ (不必担心)! Perhaps you'll have better luck next time.

2) What can we do to ________ ________(改变她的主意)?

3) It's time we _____________(下定决心).

4. too......to......

Sometimes, too, I was too weak to go to school so my education suffered.

有时候，我太虚弱了，不能去上学，因此我的学习遭受了损失。

归纳拓展：

too......to......太而不能

注意：1) too ready/willing/glad/pleased/delighted/satisfied/eager(等表示心理的adj时)...to do sth. 表示肯定意义, 译为"很/非常"。

　　　2) can't/can never ...too...再......也不过分

即景活用：完成下列句子

1) She was ________ __________ _________ ________ a word (激动的说不出话来)when she heard the news.

2) As far as I know, they are too anxious to leave.

（译）_______________________________________________________________

5. as+adj.+ a/an +可数名词单数+ as ...