内容正文:
八年级下册
课时15 Units 9~10
考点精讲1 have been to 曾经到过
Have you ever been to a museum?
你曾经去过博物馆吗? (教材P65 Unit 9)
have been to 意为“曾经到过某地”,表示人已经回来,其后可接次数,也可以和ever、 never、 just连用。
have gone to 意为“到某地去了”,指人还未回来,不在说话现场。
have been in 意为“在某地”,强调从过去到现在一直待在某地,表示状态,常与表示一段时间的状语连用。
考点精讲2 invent v. 发明;创造
They have information about different computers and who invented them.
它们有关于不同电脑和发明人的信息。 (教材P67 Unit 9)
invent作动词,意为“发明;创造”; inventor作名词,意为“发明者;创造者”; invention 作名词,意为“发明;创造”。 invent的用法如下:
[拓展] invent、 discover与find out的区别
invent 指发明创造出原来不存在的东西。
discover 意为“发现”;一般可以与find互换,但是在表示科学(如石油、星星、古迹、天文等)的发现时,用discover, find重在指“发觉;察觉”。
find out 指通过(努力)观察、探索而发现事实的真相。
考点精讲3 encourage v. 鼓励
It also encourages governments and social groups to think about ways to improve toilets in the future. 它也鼓励政府和社会团体思考未来改善厕所的方法。(教材P67 Unit 9)
考点精讲4 whether conj.
不管……(还是);或者……(或者);是否
Whether you like Indian food, Western food or Japanese food, you’ll find it all in Singapore!
不管你是喜欢印度食物、西方食物还是日本食物,你都会在新加坡找到! (教材P70 Unit 9)
1. whether意为“是否”,引导宾语从句,相当于if,一般可互换。
2. 下列情况只能用whether而不能用if。
① 引导的从句作介词的宾语时。如:
I worry about whether I hurt her feelings.
我担心我是否伤了她的感情。
② 宾语从句置于句首时。如:
Whether she will go to the zoo, I don’t know.
我不知道她是否去动物园。
③ 用在动词不定式前面时。如:
I don’t know whether to leave or stay.
我不知道是离开还是留下。
④ 引导状语从句,意为“不管……是否……;不管……还是……”时。如:
Whether you go (or not), he will go.
不管你去还是不去,他都会去。
⑤ 引导表语从句时。如:
The question is whether we should go on with this work.
问题是我们是否继续这项工作。
⑥ 直接与or not连用时。
考点精练1
( C )1. I to Beijing twice, but I will go there again this summer.
A. have gone B. went
C. have been D. had gone
C
( B )2. — Is your mother at home?
— No. She the supermarket. She’ll come back in two hours.
A. has been to
B. has gone to
C. went to
D. will go to
B
( C )3. Tom Hefei for three weeks.
A. has been to
B. has gone in
C. has been in
D. has gone to
C
考点精练2
1. Do you know who invented (发明) the bike?
2. Can you tell me about the four inventions (invent) of China?
3. Thomas