请问wit这个词什么时候用复数，什么时候用单数啊
我查了下字典，为了共同学习与分享，我打给你看：
许多名称可以是可数，可以是不可数。看它要表达什么。
wit做智慧（intelligence）讲时，是不可数的。She had to use all her native wit to convince the police.
wit做智力（ability to think quickly ）讲时，是可数的，常用复数。
She couldn’t seem to gather her wits and tell us what had happened.
wit也可以表示智慧之语（clever use of words ），可数的
a book full of the wit and wisdom of his 30 years in politics
wit还可以表示智者，才子，那肯定是可数的。
最后说一句，纠结这些真的用处不大，一个词都能把你搞晕，外国人也不一定知道得这么清楚。
你想赞美某人某事智慧，你就多加个s，你不想赞美就别加呗。语言是自己的，只有你才能说出自己特有的语言。
打了这么多，留个名吧，顺便留个自己的微博或者博客，我就不打出来了，百度搜索Ross Kung就可以了。
withdrew
1 I withdrew a lot of money _from_____ the bank yesterday.
2 I refuse to comment _on_____ his work.
3 The waiter’s tip is included ___in___ the bill.
4 He congratulated me ___on___ having got engaged.
5 This warm coat will protect you _from_____ the cold.
6 Did anything emerge ___from___ your discussion?
7 I dreamt __of____ you last night.
8 You can never rely ___on___ him to be punctual.
9 Nothing will prevent him _from_____ succeeding.
10 Are you interested __in____ music?
11 I suppose I can count _on_____ you for help _from_____ this matter?
12 Beware _of_____ the dog.
13 He persisted __in____ asking questions.
14 I insist ____on__ your telling me the truth.
15 It took me a long time to get rid _of_____ him.
16 Do you mean to say you have never heard __of____ Beethoven?
17 I separated them ___from___ each other because they were fighting.
18 They can only cure him _of_____ his illness if they operate ____on__ him.
19 You can depend __on____ me.
20 I haven’t accused him __of____ anything,but I suspect him ___of___ having taken it.
21 Whatever made you think __of____ such a thing?
22 We expect a great deal __of____ you,Smith.
23 My hands smell __of____ soap.
24 They differ _from_____ each other so much.
25 He invested a lot of money __in____ shipping.
26 The film was based ___on___ a novel by Dickens.
27 Don’t lean ___on___ that shelf!You’ll regret it.
28 She often suffers __from____ colds.
29 We have embarked ___on___ a new scheme.
30 I believe ___in___ taking my time.
31 Jones was dismissed _from_____ the firm.
32 They began by experimenting _on_____ rats.
33 Please concentrate _on_____ what you are doing.
34 She prides herself __on____ her clean house.
35 The climber failed __in____ his attempt to reach the summit.
36 Many people escaped __from____ prisons during the last five years.
37 We must economize __on____ fuel.
38 He’s never done any work.He lives _on_____ his mother.
39 He was employed __in____ a factory before he joined the army.
40 And what does this horrible drink consist ___of___
41 I shall certainly act ___on___ your advice.
42 Don’t write __on____ the desk!
43 You should not boast __of____ your success.
44 You must encourage him __on____ his efforts.
45 He should be instructed ______ his duties.
46 Two or three people were involved ___in___ the accident.
47 Children should be prohibited _from_____ smoking.
48 I can assure you __of____ my support.
49 Do you approve ___of___ hunting?
50 I despair __of____ ever teaching him anything!
51 Has this play ever been performed _on_____ the stage?
52 I warned him __of____ the danger,but he wouldn’t listen to me.
53 How much have you borrowed _from_____ me already?
54 He delights __in___ annoying me.
c语言中switch怎么用
简单的说switch语句也是属于判断语句，if else语句适合3个以内的判断，但是多了用if就不太方便了，所以这时3个以上的判断用switch语句就比较方便了，结构就像楼上的兄弟们那样写的，大概怎么用我举个例子你就懂了。-wit
例：判断一周的食谱，就是星期几的食谱是什么，首先一个星期7天，那么判断七次，用switch语句写法如下：
#include《stdio.h》
void main()
{
int a;//定义变量用于开辟1到7的数字即一星期的天数。
printf(“看看星期几的食谱是什么？“);
scanf(“%d“,&a);
switch(a)//开始判断1-7的食谱。
{
case 1:printf(“星期一吃水果\n“);
break;//结束语句，判断这天后提示完就不执行下面的语句了，否则逻辑错误。
case 2:printf(“星期二吃蔬菜\n“);
break;
case 3:printf(“星期三吃火锅\n“);
break;
case 4:printf(“星期四吃米饭\n“);
break;
case 5:printf(“星期五吃西餐\n“);
break;
case 6:printf(“星期六吃米饭\n“);
break;
case 7:printf(“星期天吃满汉全席\n“);
break;
default:printf(“请输入正确的日期\n“);//default语句类似else，如果不输入1到7的正确日期就显示这个语句。
break;
}
}
扩展资料
if 语句：“如果”语句；if—else 语句：“若…（则）…否则…”语句；switch 语句：“切换”语句；switch—case：“切换—情况”语句。
跳转结构
return：用在函数体中，返回特定值（如果是void类型，则不返回函数值）。（K&R时期引入）
continue：结束当前循环，开始下一轮循环。（K&R时期引入）
break：跳出当前循环或switch结构。（K&R时期引入）
goto：无条件跳转语句。（K&R时期引入）
分支结构
if：条件语句，后面不需要放分号。（K&R时期引入）
else：条件语句否定分支（与if连用）。（K&R时期引入）
switch：开关语句（多重分支语句）。（K&R时期引入）
case：开关语句中的分支标记，与switch连用。（K&R时期引入）
default：开关语句中的“其他”分支，可选。（K&R时期引入）
参考资料：百度百科 c语言
