save+sb+from+doing
@甫虞3492：介词+sb+doing还是do -
雍殷18220915646…… 你好 介词+doing或+名词 加动词的现在分词(doing)或者加名词,加sb的话看情况: 例如for sb to do sth, it is +adj+for sb to do. 名词+介词+doing 有些名词,其后通常接“介词+-ing分词”作后置修饰语,而一般不接to do,例如:aptitude, ...
@甫虞3492：give+sb+sth+to+do是什么意思 -
雍殷18220915646…… give sb sth to do 给某人做某事 ---------------------------------- 如有疑问欢迎追问! 满意请点击右上方【满意】按钮
@甫虞3492：supposed sb+(to be)+adj./n是什么意思 -
雍殷18220915646…… 1)suppose sb to do 认为(期望,希望)某人做某事I suppose you to clean the room.2)suppose sb +to be adj/n. 猜测某人怎样 I suppose you to be twenty.我猜你二十岁.
@甫虞3492：It+be+形容词+for sb+to do It+be+形容词+of sb+to do 怎么区分呢? -
雍殷18220915646…… 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...
@甫虞3492：t is+adj+for sb+to do sth和it is+of sb +to do sth有什么区别? -
雍殷18220915646…… 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...
@甫虞3492：It's+形容词+for sb+动词不定式,是什么语法结构??? -
雍殷18220915646…… 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 .
@甫虞3492：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 - 作业帮
雍殷18220915646…… [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 =...
雍殷18220915646…… 你好 介词+doing或+名词 加动词的现在分词(doing)或者加名词,加sb的话看情况: 例如for sb to do sth, it is +adj+for sb to do. 名词+介词+doing 有些名词,其后通常接“介词+-ing分词”作后置修饰语,而一般不接to do,例如:aptitude, ...
@甫虞3492：give+sb+sth+to+do是什么意思 -
雍殷18220915646…… give sb sth to do 给某人做某事 ---------------------------------- 如有疑问欢迎追问! 满意请点击右上方【满意】按钮
@甫虞3492：supposed sb+(to be)+adj./n是什么意思 -
雍殷18220915646…… 1)suppose sb to do 认为(期望,希望)某人做某事I suppose you to clean the room.2)suppose sb +to be adj/n. 猜测某人怎样 I suppose you to be twenty.我猜你二十岁.
@甫虞3492：It+be+形容词+for sb+to do It+be+形容词+of sb+to do 怎么区分呢? -
雍殷18220915646…… 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...
@甫虞3492：t is+adj+for sb+to do sth和it is+of sb +to do sth有什么区别? -
雍殷18220915646…… 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...
@甫虞3492：It's+形容词+for sb+动词不定式,是什么语法结构??? -
雍殷18220915646…… 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 .
@甫虞3492：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 - 作业帮
雍殷18220915646…… [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 =...
