be+adapted+from

元削魏4762如图,△ABC中,AD与BE相交于F,已知S△AFB=12cm2,S△BFD=9cm2,S△AFE=6cm2,那么四边形CDFE的面积为 - - -
郦韵熊18092918119 ______ 解:连接CF,设S△CEF=x,S△CDF=y,则 x y+9 = EF BF =6 12 ,y x+6 = DF AF =9 12 ,解得x=10.8,y=12.6,故四边形CDFE的面积=x+y=23.4. 故答案为:23.4.

元削魏4762be+adj+介词 介词该咋用? 用啥? -
郦韵熊18092918119 ______ 介词应该依形容词而定 be sure of be afraid of be good at be weak in be busy with be surprised at be famous for be proud of be different from be the same with

元削魏4762be+of+adj有这个用法吗 -
郦韵熊18092918119 ______ 只能有 be+of+名词,代词 be+of+抽象名词, 其功能,用法相当于形容词 如: They are of the same age/ colour/ size/ height/... The meeting is of great importance.= The meeting is very important. 【希望帮助到你,若有疑问,可以追问~~~ 祝你学习进步,更上一层楼!(*^__^*)】

元削魏4762Be+adj+prep或be+adj的词组属于短语动词吗 -
郦韵熊18092918119 ______ be动词是个系动词,所以在句子内是充当谓语的. be+adj+prep 不属于短语动词,而是系动词和表语.还有就是我从来没见过be动词可以加adv的.因为adv只能修饰形容词和动词,是不能修饰be动词的.

元削魏4762点P是三角形ABC内任意一点.点P是三角形ABC内任意一点,PD垂直AB,PE垂直BC,PF垂直AC,垂足分别为D,E,F,求证:AD平方+BE平方+CF平方=AF平... -
郦韵熊18092918119 ______[答案] 连接PA、PB、PCAD^2=AP^2-PD^2AF^2=AP^2-PF^2所以 AD^2-AF^2=PF^2-PD^2BE^2=BP^2-PE^2BD^2=BP^2-PD^2所以 BE^2-BD^2=PD^2-PE^2CF^2=CP^2-PF^2CE^2=CP^2-PE^2所以 CF^2-CE^2=PE^2-PF^2所以 AD^2-AF^2+BE^2-BD^2+...

元削魏4762初中英语语法整理 关于be+adj.+prep. 中考急需,一定要正确~~ -
郦韵熊18092918119 ______ be good for 对……有好处 be bad for 对……有坏处 be kind to 对……和善 be popular with 受…欢迎的 be careful of 对…仔细 be ready for 为……准备好 be interested in 对...感兴趣 be angry with 生......的气 be angry at 因......生气 be mad at 对……...

元削魏4762it+be+adj+for/of sb to do什么时候用of或for? -
郦韵熊18092918119 ______ 表示人内心品质的时候用of,其余情况用for. 我举例子吧—— 1.it's very kind of you to help me.(kind是表示品质的形容词) 2.it's important fot us to learn english well.

元削魏4762小学语法知识 比如 be+动词ing等 -
郦韵熊18092918119 ______[答案] 【小学英语语法知识点汇总】 1.人称代词 主格:I we you she he it they 宾格:me us you her him it them 形容词性物主代词:... 10.be 动词 (1) Basic form:am/are/is (2) 肯定和否定句 I am(not) from London.My eyes are(not) small.My hair is(not) long.(3)...

元削魏4762be+obtained+for是什么意思 -
郦韵熊18092918119 ______ 所得,得到. Young people should not hurt, should be obtained for each individual should avoid hypocrisy and deceit, itshould be looked courtliness pleasing, so learn to righteousness. 青年人应当不伤人,应当把个人所得的给予各人,应当避免虚伪与欺骗,应当显得恳挚悦人,这样学着去行正直.

元削魏4762be+adj+prep 介词后面在句中作什么成分 -
郦韵熊18092918119 ______ 介词后面的即可说是介词宾语.,也可说是动词短语be+adj+prep的宾语.如 I am proud of my brother's grades. He was surprised at his being late again. We are concerned about your health.