warn+sb+of+doing

晏狄印3492用It was +形容词+for sb+to do sth句式造句 -
通肤裴17543216246 ______ 这句话的意思:对某某来说,做什么事是怎么样的.it 's hard for me to deal with the problem.

晏狄印3492it's+abj+of sb+to do sth
通肤裴17543216246 ______ adj是说明sb的品质特点用of sb; 说明to do sth用for sb (说人的用of sb. 说事的用for sb.) It's very nice of you to help me. 你来帮助我,你真是太好了. It's very hard for him to study two languages. 对他来说学两门外语是很难的. 用介词后面的代词作主语,用介词前边的形容词作表语,造个句子.如果道理上通顺用of,不通则用for.如: You are nice. (通顺,所以应用of). He is hard. (人是困难的,不通,因此应用for.)

晏狄印3492it＂s nice of you - --- - me with my english A: for help B:to help C:helping D:helped -
通肤裴17543216246 ______ It's nice of you _____ me with my English. A: for help B:to help C:helping D:helped 虞其君解答:选择B.it is+adj.+of+宾格+to do表示某人怎么样,能做某事. 中文:你真是太好了,能帮我学英语.

晏狄印3492已知a,b,c,d都是正数,S= a a+b+d + b b+c+a + c c+d+a + d -
通肤裴17543216246 ______ ∵a,b,c,d都是正数,∴S= a a+b+d + b b+c+a + c c+d+a + d d+a+c > a a+b+c+d + b a+b+c+d + c a+b+c+d + d a+b+c+d = a+b+c+d a+b+c+d =1;S= a a+b+d + b b+c+a + c c+d+a + d d+a+c a a+b + b b+a + c c+d + d d+c =2 ∴1故答案为:(1,2)

晏狄印3492已知a,b,c,d属于R十,且s=a(a十b+c)+b/(b+c+d)+c/(c+d+a)+d/( -
通肤裴17543216246 ______ a,b,c,d∈R+,∴S= a a+b+c + b b+c+d + c a+c+d + d d+a+b > a a+b+c+d + b a+b+c+d + c a+b+c+d + d a+b+c+d =1 S= a a+b+c + b b+c+d + c a+c+d + d d+a+b a+d a+b+c+d + a+b a+b+c+d + c+b a+b+c+d + c+d a+b+c+d =2* a+b+c+d a+b+c+d =2 ∴1

晏狄印3492把( - a+b+c+d)( - a - b+c+d) 和 (a+b - c)(a - b+c)变成(A+B)(A - B)的形式 你好可以教教这道题吗?详解 -
通肤裴17543216246 ______ (-a+b+c+d)(-a-b+c+d)=[(-a+c+d)+b][(-a+c+d)-b]=(-a+c+d)²-b² (a+b-c)(a-b+c)=[a+(b-c)][a-(b-c)]=a²-(b-c)²

晏狄印3492拳皇95 BOSS有一招,裁剪者:↓↙←↖+B或D,请问这招用WSAD如何放出来? -
通肤裴17543216246 ______ 先按S后按A再按w 下后上 BD应该是脚吧!

晏狄印3492一种化学方程式的配法,令每个化学式前的系数为字母a、b、c.然后根据原子守恒解得各系数以这个方程式为例:KMnO4 + K2SO4 +H2SO4——K2SO4 +... -
通肤裴17543216246 ______[答案] 太麻烦了! a+2b=2d(K).(1) a=e(Mn).(2). 4a+4b+4c=4d+4e+f(O).(3) b+c=d+e(S).(4) 2c=2f(H).(5) 联立几个式子. (但是亲爱的楼主,你没有发现方程式左右两边都有K2SO4吗?) 如果是H2SO3的话: 那根据氧化还原反应: Mn由+7降为+2降低5价 S...

晏狄印3492lt is+形容词+for sb或to sb+动词不定式什么情况下用for什么情况下用to? -
通肤裴17543216246 ______[答案] 1、动词不定式作主语是被动语态时用 to sb 例如:It's a great honour to Mary's birthday partyto be invited. 2、动词不定式作主语是主动语态时用 for sb 例如:It was impossible for lost time to be made up.

晏狄印3492it is very kind____you to help me get the ticket of F1 a.for b.to c.with d.of 选哪个? -
通肤裴17543216246 ______[答案] d .of it is +adj+of sb+to do sth kind(友好的)是修饰人的 而it is +adj+for sb +to do sth中的adj是修饰物的