找出下列英語句子的錯誤並改正 1、His uncle is going to return back from Australia next week. 2、There was a pen on the floor and Linda picked up it. 3、Mike and his friend decided to go for ride on Sunday. 4、Why didn't your friend David finished his homework last week？ 5、Mr Smith noticed the bottles in the room was all in pieces.

找出下列英語句子的錯誤並改正 1、His uncle is going to return back from Australia next week. 2、There was a pen on the floor and Linda picked up it. 3、Mike and his friend decided to go for ride on Sunday. 4、Why didn't your friend David finished his homework last week？ 5、Mr Smith noticed the bottles in the room was all in pieces.

1去掉back
return返回，本身= come back，後面再接back顯然多餘
2 picked up it改成picked it up
當pick up與it等代詞一起使用時，it等代詞需放在中間
3 for後面加上一個a
go for a ride固定搭配，兜風
4 finished改成finish
前面已經有助動詞didn't了
後面謂語動詞應該用原型
5 was改成were
bottles是複數
所以應該用were

找出下麵句子中的錯誤，並改正！（英語類）
1.Would you like to come to having supper？
2.My friend Tim usually play table tennis with his classmates.
3.A long time ago，people think the sun went aroud the earth.
But now，we know the earth go around the sun.
4.Jim，do you want to buy a MP4？
5.Have you got much friends in America？
6.Is there lots of rainy this summer in your city？
7.You must play withfire.It's dangerous.
8.Two years later，the Olympic Games will be hold in China.
9.some people don't likes number 13.
They think 13 is a unlucky number.
第3條與第9條分別有兩個錯誤！

1，having -> have
2，play -> plays
3，think -> thought，go -> goes
4，a -> an
5，much -> any
6，rainy -> rain
7，must -> mustn't
8，hold -> held
9，likes -> like，a ->an

英語下麵句子分別有錯誤一項，找出，並改正
1.The sun is bigger and brighter than moon
2.The air in the country is much fresher than in the city
3.Jim's coat is the baddest of aii

1.the moon
2.than that that代表the air
3.bad的最高級是worst

一個長方形的長和寬的比是5:4，這個長方形的周長是36cm.它的長和寬分別是多少？

36÷2=18（釐米），5+4=9，18×59=10（釐米），18×49=8（釐米）；答：它的長是10釐米，寬是8釐米.

y=ax平方+bx+c（a不等於0，a不等於c）過點a（1.0），頂點為b，且抛物線不經過第三象限
（1）用a，c表示b：（2）判斷點b所在象限，並說明理由

（1）∵過點A
∴a+b+c=0
∴b=-a-c
（2）∵抛物線不經過第三象限
∴a>0 c≥0
且x=-b/2a>0或者x=-b/2a0 y=（4ac-a²；-2ac-c²；）/4a=-（a-c）²；/4a≤0
∴頂點B在第四象限或者x軸正向上.

碎石一個立方是多少噸？

從“超密”談二灰碎石最大幹密度控制標準劉浩鷹丁戰徐鎮光【徐州市公路管理處徐州221002】摘要：本文從判定路基混合料結構狀態及壓實特性出發，提出以重型擊實標準值、試驗路建議值和理論計算值等三個最大幹…

如何判斷一個多項式為幾次多項式？

打個比方：
3x³；y+4x²；y.將每個單項式的未知數的次數相加，得到數位最大的就是這個多項式的次數.
這題中，3x³；y是四次單項式，因為3+1,4x²；y是三次單項式，因為2+1,4＞3，所以這個多項式的次數是4次.採納我為答案吧

帶圈圈的曲線積分符號叫什麼名字
我們知道積分的符號是一個象S一樣的符號，那麼這個符號上如果有一個圓圈，那麼他是什麼積分啊？
就是這個：∮
∮和∫有什麼區別啊

它表示對閉合曲線或曲面求積分

給個體積的組織換算表
包括CM的三次方，ML，L那些全部
不用太專業，

1ml=1cm3
1l=1000cm3

（a+b）²；=a²；+2ab+b²；及（a-b）²；=a²；-2ab+b²；這兩個公式他們有什麼聯系與不同

聯系：兩個都是完全平方公式，其中（a+b）²；-（a-b）²；=4ab
不同：一個是和，一個是差