八年级英语下册unit6anoldmantriedtomovethemountainsperiod3课件新版人教新目标版

’t find our way out. Hansel! We’re really lost! Listen! That bird’s song is so beautiful that we should follow it. Look! It’s leading us to that wonderful house made of bread, cake and candy. Let’s

.代入公式求方程的根 02  cbxax  0a例２ 解方程   02321 2  xx解： 2,3,2  cbaacb 42     2243 2  22253 x453 21,221  xx即：25169 注意符号      069232  xx解： 0627692 2 

 acb.4 179。 4 179 21  xx用公式法解一元二次方程的一般步骤： 2 42b b a cxa  代入求根公式 : 求出 的值， 2 4b a c把方程化成一般形式，并写出 的值。 ab、 、 c写出方程的解： 12xx、特别注意 :当 时无解 2 40b ac例 1 解方程： x27x18=0 解：这里 a=1, b= 7, c= 18. ∵

ot get bigger. So Yu Gong and his family kept on ________ day after day and year after year. Finally, a god was so ______ by Yu Gong that he sent two gods to take the mountains ______. This story

he/she/it working? Yes, he/she/it was. No, he/she/it was not. Were we/you/they working? Yes, you/we/they were. No, you/we/they were not. 1a Think of a time when you were late for or couldn’t go to an

h some people may not remember who killed him, they remember what they were doing when they heard the news. We finished the rest of our dinner in silence. 3. September 11, 2020 the date alone means