English translation The first is "white bandits", the second is "hand off sovietrussia"

English translation The first is "white bandits", the second is "hand off sovietrussia"

The white bandit means the invader or intervenes in a certain area, such as the invasion of Iraq by the United States
2. Don't get involved in the Soviet Union
The first; the white bandits; the second; from the Soviet Union
English translation
I'm more missing you than lonely
More than alone
English present continuous tense
The construction of the present continuous tense
Negative sentence
General questions
The reform of special questions
Three forms of present participle
The present progressive tense refers to the action that is going on or taking place in the present moment. It emphasizes "at this moment". E.g.He is reading. They are talking now
In the following functions, the minimum positive period of π 2 is ()
A. y=sin(2x-π3)B. y=tan(2x-π3)C. y=cos(2x+π6)D. y=tan(4x+π6)
The minimum positive period of sine and cosine type is t = 2 π ω, the minimum positive period of tangent type is t = π ω, so the minimum positive period of functions in a and C is π, the minimum positive period of functions in B is π 2, and the minimum positive period of functions in D is π 4, so B is selected
The present continuous tense is in English
The present continuous is used to talk about present situations which we see as short-term or temporary.We use the present simple to talk about present situations which we see as long-term or permanen...
the present continuous tense
present progressive
the Present Continuous Tense
the Present Continuous Tense
the Present Continuous Tense
If the minimum positive period of the following function is 1 / 2, it is
A、y=sinπx B、y=cos2x C、y=tanx/2 D、y=cot2πx
2. If the minimum positive period of function f (x) = 1-2cos square ω x is twice that of function g (x) = cos4x, then
ω=--------
1.D
2. The minimum positive period of G (x) = cos4x is π / 2
Then the minimum positive period of the function f (x) = 1-2cos square ω x is π
And f (x) = 1-2cos square ω x = - cos (2wx)
SO 2 π / (2W) = π
The solution is w = 1
D, 1
The structure of English present continuous tense!
The positive and negative forms of the example sentences are changed into general questions
The subject + is / are + doing / adjective / noun progressive tense means that the action is going on, which is temporary and unfinished. The progressive tense includes the present continuous tense, the past continuous tense and the future continuous tense
1、 23. On R, of the following functions which are periodic are
A. How to judge whether the result of a number or several numbers is a periodic function
Do you know the definition of periodic function?
The term B is correct, and the period is 2 π. For others, take the term a for example, the value change of the x power of E is not uniform, so it can not make Sint a periodic function. The term C is an odd function, so it must be monotonic, so it can not be a periodic function. Just draw a picture of the term D
Do verbs in interrogative and negative sentences need to be reduced?
If you ask a question about the subject, the predicate will not change. For example
He studies English hard
Does he study English hard?
He doesn't study English hard.
He studies English hard
How does he study English?
He studies English hard
Who studies English hard?
2. He did his home at 4:00 in the afternoon
Did he do his homework at 4:00 in the afternoon?
Did (auxiliary verb, no meaning), do (predicate verb, do)
He did not do his homework at 4:00 in the afternoon.
The first did is that the auxiliary verb has no meaning and helps do form a negative sentence. The second do is that the predicate verb must be reduced
He did his home at 4:00 in the afternoon
When did he do his home
He did his home at 4:00 in the afternoon
Who did his home at 4:00 in the afternoon
The predicate verb in the sentence is in the form of "do", "does" or "did", and the object of the question is not the subject. It needs to be changed into the structure of "do.." do \\\\\\\\\\\\\\\\
If it is a general past tense or a third person singular general question or negative sentence, the verb is to restore.
Find the period of the following function:
（1）y=2cos（2x+π/4）
（2）y=cos（3x/5）
（3）y=2cos（π/4-x/3）
T=2π/w=2π/2=π
T=2π/w=2π/(3/5)=10π/3
T=2π/w=2π/(1/3)=6π
It can be seen from the above examples that the period is independent of the initial phase angle, and the period is only related to W. when calculating the period, w should be equal to the absolute value of X coefficient