I will have _____ A. a bar of B. a loaf of

I will have _____ A. a bar of B. a loaf of

B,
B.
A loaf of one
A loaf of bread, not a bar of bread
What's the difference between a glass of, a bot ter of, a cup of, some
A glass of water
In fact, these two can be exchanged for each other. It just means that the containers are different
A cup of
Some bread
a cup of tea
a glass of water
some bread
a botter of juice
a cup of _____ a glass of_____ a pint of_____
chinese
A cup of tea
A glass
A pint
One cup (tea cup)
A glass (of glass)
A pint (unit of capacity)
a cup of tea/coffee
A cup of tea / coffee
a glass of water/beer
A glass of water / beer
a pint of beer
A pint of beer
English present continuous tense sentences
I am learning English
He is watching TV
They are playing basketball
Some questions about the minimum positive period of function
Just learn, do not understand, please master under the guidance
If f (x) = cos n π / 4 and N belongs to N +, then f (1) + F (2) + F (3) + '+ F (100)=______
And y = 2Sin (π / 3 - π / 2x). Is the minimum positive period 4? If not, what is it
Finally, the minimum positive period of y = 5cos (2 + 2 π / 3 under 3 π / 2x - radical)
Note that Pi is pi
Online, etc``````
What is the minimum positive period of y = 5sin (2 / 5x + π / 6),
F (1) = radical 2 / 2, f (2) = 0, f (3) = - radical 2 / 2, f (4) = - 1, f (5) = - radical 2 / 2, f (6) = 0, f (7) = radical 2 / 2, f (8) = 1, f (1) + F (2) + +f(8)=0 ∴f(1)+f(2)+…… +The minimum positive period T of F (100) = 16 * 0 + F (97) + F (98) + F (99) + F (100) = - 1 y-2sin (π / 3 - π / 2x) is 2 π / (...)
Five English sentences in the present continuous tense
The earth moves around the sun
He often wakes up at 7 every morning
I am at home now
We have six classes every day
We can see some pictures on the wall
Teacher pan, that's right, no problem
A problem of proving periodic function
For the function f (x), when x ∈ (- ∞, + ∞), f (2-x) = f (2 + x), f (7-x) = f (7 + x), it is proved that the function y = f (x) is a periodic function
f(x)=f(4-x)=f(14-x)
f(x)=f(x+10) T=10
English verb followed by ing
The more, the better. Thank you
-The "ing" participle is made up of the original form of the verb and the ending of the word - ing
General perfect
Active form doing active form having done
Passive form being done passive form having been done
talking , working, buying ,listen,
Swimming, learning, talking, laughing, speaking, sending, taking, having, coming, believing, carrying, arguing, telephoning, making, keeping, collecting, inviting, smoking, teaching, passing, communicating, organizing, go, etc
Swimming、Learning、talking、laughing、speaking、sending、taking、Having、coming、believing、carrying、arguing、telephoning、making、keeping、collecting、inviting、Smoking、teaching 、passing、communicating、organizing、going、breaking、seeing、 running、beating
Wait, wait, too much. I don't understand the meaning of LZ. So much first. Put it away
looking making sitting talking working buying listening searching
watching doing cooking leaning playing washing eating singing flying crying jumping running handing showing drawing helping waiting skating skiing teaching standing writing
looking
searching
。。。
A proof of periodic function
The domain of definition is r, where f (x) = f (x-1) + F (x + 1). It is proved that f (x) is a periodic function
prove:
Because f (x) = f (x-1) + F (x + 1),
So f (x + 1) = f (x) + F (x + 2);
So f (x) - f (x-1) = f (x) + F (x + 2)
So - f (x-1) = f (x + 2)
So f (x) = - f (x + 3)
So f (x + 3) = - f (x + 6)
So f (x) = f (x + 6)
So f (x) is a periodic function
f(x+1)=f(x)+f(x+2)=f(x-1)+f(x+1)+f(x+2)
So f (x-1) = f (x + 2)
f(x)=f(x+3)
Rules on adding ing and ed to verbs in English
1、 Change of verb ing: in general, add ing directly after it, such as look -- looking, jump -- jumping, Some words need to be remembered: Double write the last consonant letter and add ing / x0dun -- running swim -- swimming get -- getting sit -- sitting / x0dbegin beginning / x0d. 2. The change of verb ed / x0d1. Generally, add ed directly after it, such as visit -- visited, help -- helped / x0d2. Add d with silent e, such as decision -- decided, \In addition, you need to memorize the past tense of irregular verbs, such as go -- went, do -- did