avoid+sb+from+doing


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卢码19568198051: lt 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? -
63611农兴 : 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.

卢码19568198051: t is+adj+for sb+to do sth和it is+of sb +to do sth有什么区别? -
63611农兴 : t is+adj+for sb+to do sth和it is+of sb +to do sth的区别:1.it is+adj+for sb+to do sth表示事物特征特点.It's very hard for him to study two subjects. 对他来说学两门科目是很难的. 2.it is+of sb +to do sth表示人物的性格.It's very nice of you to help me...

卢码19568198051: It's+形容词+for sb+动词不定式,是什么语法结构??? -
63611农兴 : it是形容词主语,动词不定式是真正的主语,故也可写成:动词不定式 +BE +形容词+for sb . 如It 's important for us to learn English well .= To learn English well is very important for us .

卢码19568198051: It+be+形容词+for sb+to do It+be+形容词+of sb+to do 怎么区分呢? -
63611农兴 : 两者的区别体现在其中形容词的修饰对象上,可以此区分. 1.It is+adj+of sb+to do sth 中形容词(adj)修饰的是人(sb),侧重表示的是这个人的品质. 例子:it' is kind of you to help me.意思是你能帮我太好了. 其中kind可以翻译为善良的,好...

卢码19568198051: sql语句 select a+b from c b有时是NULL 如何修改语句,在b不等于null时,执行select a+b from c -
63611农兴 : select a + b + (case when b is null then 0 else b end) from c 就可以了 或者是,当b是null 执行 select a form c 当b 不等于 null 执行 select a+b from c SELECT a + (case when b is null then 0 else b end) from c

卢码19568198051: 已知向量a=(0,1),向量b=( - √3/2, - 1/2),向量c=(√3/2,1/2),xa+yb+zc=(1,1),则x^2+y^2+z^2的最小值为 -
63611农兴 :[答案] xa+yb+zc=(1,1) x(0,1)+y(-√3/2,-1/2)+z(√3/2,1/2)=(1,1) => (-√3/2)y +(√3/2)z=1 (1) and x-(1/2)y+(1/2)z = 1 (2) from (1) z-y = 2√3/3 from (2) z-y = 2(1-x) 2√3/3 = 2(1-x) x= 1- √3/3 S = x^2+y^2+z^2 = (1- √3/3)^2 + (z- 2√3/3)^2 +z^2 S' = 2(z- 2√3/3)+2z =...

卢码19568198051: a+be+different+from+b是什么意思 -
63611农兴 : a与b不同,如My pen is different from yours.我的钢笔与你的不同.

卢码19568198051: 英语造句~拜托~ -
63611农兴 : 你也太懒了吧,字典都能找到. 1.I would like to go shopping. 2.it is difficult to answer this question. 7. He advise me to do some exercises. 19.i am looking forword to hearing from you. 18.是不是打错了,应该是avoid 吧. You should avoid making ...

卢码19568198051: It's+adj.+of sb+to do sth是什么意思 -
63611农兴 : 你好, It's+adj.+of sb+to do sth 是一种固定句型 表示:某人做某事怎么样 例如: It's kind of you to help me . 你能帮助我真是太好了. It's silly of him not to forgive others for their mistakes. 他不肯原谅别人的过错真是太傻了.

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