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关于【few和a few的区别】,few和afew的区别,今天小编给您分享一下,如果对您有所帮助别忘了关注本站哦。
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- 1、few和a few的区别:few和afew的区别,和的区别
- 2、英语中few,a few,little,a little用法区分大全,关注有更新
1、few和a few的区别:few和afew的区别,和的区别
硬件型号:74161计数器芯片
系统版本:芯片系统
计数器74160和74161的区别如下:
一、数位进制不同:
计数器74160是4位十进制同步计数器。
74161是4位二进制同步计数器。
二、改制不同:
74160是根据74161通过异步置零法改制,成为四位同步十进制计数器。
61初始值为0001,在下一个CP到来前,把状态变为计数就能实现强制从0001开始计数。
三、用途不同:
芯片74161可以用74ls161芯片代替,不能用74160通过电路来代替。
74ls161和74161是功能一样的芯片,74161是标准型的芯片。
2、英语中few,a few,little,a little用法区分大全,关注有更新
示肯定含义,意为有一些,有几个,few
表示否定含义,意为几乎没有。
例如:a few teachers(有几位老师)
few teachers(几乎没有老师)
2. little/a little修饰不可数名词,a little表
示肯定含义,意为有一些,little表示否定
含义,意为几乎没有。
例如:a little water(有一点水)
little water(几乎没有水)
3. 如果 few被 last, past, next, some, very
等词所修饰,则表示肯定意义,few之前
不加冠词。
例如:1).In the last few minutes, my
brother checked up his paper again.
2).It took us some few weeks to repair
themachine.
4. little/a little也可以修饰可数名词表
示“小的”,具体要看题意。
例如:There is a little bird in the box.
5. 强化习题
1) Do you want juice? There is _____left in
my cup.
2) There are many books, but________
of them are easy to read.
3) Please hurry up,Lucas. There is _____
timeleft.
4) The stone is very heavy. ___________of
us can lift it.
5) Don't worry, Amy. we still have
_________ time left.
6) There are_________ pencils left. We
can't lend you any one.
7) Lucas has learned English for five
years, and he can speak______English
now.
8) There is __________water in my glass,
Please give me____________.
9) Give me another cup of coffee please.
There is ___________in this cup.
10) Don't worry. There is still__________
time left.
1. a little 2. few 3. little 4. few 5. a little6. few 7. a little 8. little, a little
9. little 10. a little
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