What's wrong with this English sentence It was take place in sydeny that Olimpic Game in 2000 years My teacher said this sentence is not a sentence, why?

Was taken place is a passive voice. You are not in the right tense

Please correct the mistakes in English sentences as soon as possible,
1.It’s a preliminary cognitive fieldwork of geology that had direct knowledge of stratum,igneous rock and geomorphy (such as karst,river,delta,seashore,etc.).The geological fieldwork integrated theory with practice,and was very helpful to enhance the thought and skills of fieldwork.
2.It’s a systematic geological skills training that had a comprehensive study of the outdoor features of various stratum,rock and structure (fold and fault).Learnt the method of collecting rock samples, geological profile survey and geological mapping and mastered the usage of GPS PDA along with mapping software.The most important is to realize the importance of teamwork and the meaning of the school motto,“Hard work and plain living; realistic and pragmatic”.
I don't know how many mistakes are used in writing resume. Please point out,

I've been asking questions for a few days, but I'm still a reply. Maybe I think the original is well written. However, starting from mutual discussion, I'd like to express some suggestions: the sentence structure is not too big a problem, but the way of expression can be improved to make the article more fluent
Some words have their own discretion
Have or contain is not necessarily used had, but can be replaced by other synonyms to make the sentence more vivid
Mastered the usage of GPS… You mean to master the use of GPS or its use skills, while usage generally refers to the use and usage of things, so it is more appropriate to replace it with application or use
As for skill, as a noun, the plural can add s This skill can't be used as a noun plus s, because training is a noun, so the statement on the first floor is correct
Just a few superficial views, for reference only
1. It’s a preliminary cognitive fieldwork of geology consisting direct knowledge of stratum, igneous rock and geomorphy (such as karst, river, delta, seashore, etc.). This geological fieldwork was an integration of theory and practice, so it was very useful in the enhancement of the thoughts and skills of fieldwork.
2. It's a systematic geological skill training that covered a comprehensive study of the outdoor features of variable strategies (or plural strata), rocks and structures (fold and fault). From the training, I had learned the method of collecting rock samples, geological profile survey and geological mapping, as well as mastered the application of GPS PDA and mapping software. The most important benefit I had gained was the recognition of the value of teamwork and the meaning of the school motto, “Hard work and plain living; realistic and pragmatic”.
[English cattle group]

Who can help me to see if there is anything wrong with this English sentence and how to correct it
Along with the economic development rapidly,people's standard of living also has a great breakdown.
It's not a breakdown, it's a breakthrough. I forgot to change it just now. What I asked was a grammatical mistake

Along with the rapid economic development,people's standard of living has also greatly elevated.

If the square of polynomial x + mx-16 can be factorized, how many values can integer m obtain?
Which ones

(1) M = 0, then: x ^ 2-16 = (x + 4) (x-4)
(2) M = - 15, in this case: x ^ 2-15x-16 = (x-16) (x + 1)
(3) M = 15, then: x ^ 2 + 15x-16 = (x + 16) (x-1)
(4) M = - 6, in this case: x ^ 2-6x-16 = (X-8) (x + 2)
(5) M = 6, then: x ^ 2 + 6x-16 = (x + 8) (X-2)
So: m has five possibilities, which are 0, - 15,5, - 6,6

The length of the rectangle increases by 2 cm, the area increases by 8 square cm, the width decreases by 3 cm, and the area decreases by 15 square cm

Let the width be y and the length be X
(x+2)y=xy+8 ( y-3)x=xy-15
xy+2y=xy+8 xy-3x=xy-15
2y=8 3x=15
y=4
x=5
Area = 20

If the linear function y = 2 (1-k) x + 2 / 1k-1 image does not pass through the second quadrant, then the value range of K is?

(1) When the slope exists, 2 (1-k) > 0; 2 / 1k-1 ≤ 0
K0 is obviously not in line
So K

On partial derivatives
Why is the direction of the vector composed of three partial derivatives tangent?

First of all, the function you asked is ternary, with three unknowns in space, which is also expressed in three dimensions
If it's unary, we know that the partial derivative of X is the slope of the tangent, which is the direction of the tangent
Two yuan is the same as three yuan
The vector of partial derivative is tangent
Because the function of the three variables is differentiable, then there is a partial derivative function for any line
The three partial derivatives represent the change rate of the function on the line
So this vector is the rate at which the function changes

A. B, C, D, e five people in a full score of 100 points in the examination, a score of 94, B is the first, C score is the average score of a and D, D score is the average score of five people, e more than C 2 points, is the second, then B got how many points?

According to (1) analysis, C is the average score of a and D, and if d > A, there is a < C < D; according to (2) analysis, D score is even, which is 96 or 98. When d = 98, it does not conform, and is rounded off; when d = 96, C = (94 + 96) △ 2 = 95, e = 95 + 2 = 97, 5 × 96 - (94 + 95 + 96 + 97), = 480-382, = 98; a: B gets 98

How to change the general form of quadratic function into vertex form by formula method

Y = ax ^ 2 + BX + C into vertex formula: y = a (x + B / 2a) ^ 2 + (4ac-b ^ 2) / 4A

What does square of X + square of X - 1 / 1 = 3 equal?

Anhui Tianchang Lidong junior high school mathematics teacher answers for you
Your original title is wrong in typing. Please ask questions later and type carefully. Now it is changed to x square + 1 / (x square - 1) = 3
X squared + 1 / (x squared - 1) = 3
X squared-1 + 1 / (x squared-1) = 2
The square of X-1 + 1 / (x-1) - 2 = 0
Square of [square of X under root - 1 - 1 / (x square - 1)] = 0
So the square of X under the root sign - 1 = 1 / (x square - 1) under the root sign
So [square of X under root - 1] square = 1
So the square of X under the root - 1 = + 1
X = 2, so x = + - root 2
It is proved that x = + - radical 2 is the solution of the original fractional equation
Please add 200 points

What's wrong with this English sentence It was take place in sydeny that Olimpic Game in 2000 years My teacher said this sentence is not a sentence, why?