英語翻譯 sit on that pile of newspapers ask me to write a composition on newspapers soon after the term started some Grade Eight students at Mayfield School publish a newspaper hold a meeting elect Joyce to be the chief editor ought to elect a secretary ask for suggestions have experience start taking notes

英語翻譯 sit on that pile of newspapers ask me to write a composition on newspapers soon after the term started some Grade Eight students at Mayfield School publish a newspaper hold a meeting elect Joyce to be the chief editor ought to elect a secretary ask for suggestions have experience start taking notes

sit on that pile of newspapers坐在那堆報紙上
ask me to write a composition on newspapers讓我寫篇關於報紙的文章
soon after the term started學期開始不久
some Grade Eight students at Mayfield School一些曼菲爾德學校的八年級學生
publish a newspaper發行一份報紙
hold a meeting開一場會
elect Joyce to be the chief editor選舉喬伊絲做主編
ought to elect a secretary應該選舉一比特秘書
ask for suggestions詢求建議
have experience擁有經驗
start taking notes開始做筆記
坐在那堆報紙上
請我些一片有關報紙的文章
學期開始不久
一些美菲學校的八年級學生
出版一份報紙
召開一個會議
選舉Joyce為主編
應該選個秘書
請求建議
有經驗
開始記筆記
坐在那堆報紙
讓我在報紙上寫一篇作文
學期開始後不久
一些八年級的學生在梅菲爾德學校
出版報紙
舉行一次會議
選舉喬伊絲是主編
應該選出一名秘書
提出建議
有經驗
開始記錄筆記
英語翻譯
市場銷售總監
國際貿易公司總經理
工學博士
一定要翻譯正確,做名片
市場銷售總監= Sales and Markeingg Superintendent/Manager/Officer/Supervisor看你用在那裡?國際貿易公司總經理General Manager,International Trade Company工學博士Doctor of Engineering…
名片上簡短為宜,便於印刷
Marketing & Sales Director
Managing Director,Int'l Trading
Eng.D
Marketing &Sales Director
General Maneger of International Trading Company
ENN D Doctor of Engineering
我的翻譯作參攷
both +不可數名詞and+不可數名詞+?(謂語動詞為單數還是複數)
複數
複數,因為後面有謂語,所以其連接的是兩個主語,雖然是不可數,但謂語還得用複數形式
設A={3、10},B={1、8},對於任意x∈A,X→ax+b表示從集合A到集合B的函數,求實數a、b的值
因為x屬於a,所以當x等於3時,根據對應關係得3a+b=1 10a+b=8解值的a=1,b=—2或3a+b=8 10a+b=1得a=-1,b=11
Both在否定句中應該改為什麼?還有謂語動詞用單數還複數?
neither
複數
A={3,10} B={1,8}對於任意X屬於A,x--ax+b表示從集合A到集合B的函數求實數a b的值.
只知道一共有4種答案.
x=3時3-3a+b=1或8
設(1)式b-3a=-2或5
x=10時10-10a+b=1或8
設(2)式b-10a=-9或-2
兩式聯立,則
(1)式=-2,(2)式=-9時,a=1,b=1
(1)式=-2,(2)式=-2時,a=0,b=-2
(1)式=5,(2)式=-9時,a=2,b=11
(1)式=5,(2)式=-2時,a=1,b=1
有四個答案,但結果只能算三個.
謂語動詞的單複數形式
It()Jane and Mary who helped me the other day.
A.was B.were
A
這是一個強調句型結構
It is/was+被強調部分+that+句子其他成分
eg Jane and Mary helped me強調Jane and me
就應該是It was Jane and Mary who helped me
你的答案應該是有問題的.
注意強調人是可以用who句型結構只能用is或者was
was
強調句it was……who……
was因為是It..
已知函數f(x)=x2+ax+b,a,b∈R,且A={x|x=f(x)},B={x|x=f[f(x)]}.
.已知函數f(x)=x2+ax+b,a,b∈R,且A={x|x=f(x)},B={x|x=f[f(x)]}.
(1)求證:A B;
(2)若A={-1,3}時,求集合B.
f(x)=x^2+ax+b
A={x| x=f(x)},B={x| x=f(f(x))}
x∈A
=> x = f(x)
=> f(x)= f(f(x))
=> x = f(f(x))(x= f(x))
=> x∈B
=> A is subset of B
A={-1,3}
x= x^+ax+b
x^2+(a-1)x+b=0
sum of roots
-(a-1)= 2
a = -1
product of roots
b=-3
=> f(x)= x^2-x-3
f(f(x))=(x^2-x-3)^2 -(x^2-x-3)-3 = x
(x^2-x)^2-6(x^2-x)+ 9 - x^2=0
x^4-2x^3-6x^2+6x+9=0
(x+1)(x-3)(x^2-3)=0
x = -1 or 3 or -√3 or√3
B = {-1,3,-√3,√3}
謂語動詞的單複數形式是怎樣的,舉個例子?
謂語動詞單複數形式是針對主語而言的,比如have這個詞主語為複數如我們,人們的時候用have(謂語動詞即複數形式),主語為單數如他她它時用has(謂語動詞單數形式,又稱單三),如果是turn,複數使用原型turn,單數用turns.當然像be,have這樣的謂語動詞屬於不規則變化,這些就要靠記憶了
函數f(x)=(x2+2x-3)/(x-1)(x>1)ax+1(x
函數在x=1處連續
則lim(x→1+)(x^2+2x-3)/(x-1)=a*1+1=a+1
lim(x→1+)(x^2+2x-3)/(x-1)
=lim(x→1+)(x+3)(x-1)/(x-1)
=lim(x→1+)(x+3)
=4=a+1
a=3