“On the contrary,” Contrary to what? Contrary is a word used to compare 2 or more things or ideas. If you use this phrase, you must also explain what things you are comparing. In this instance, I suspect you are comparing city and country life, but you do not make this clear.

“people need to do their work in the farm” Change this to “people work on farms” to make it closer to English idiom.

“or work as working class people.” Working class people do not work in rural areas. They work in towns or cities.

“And they do not have enough pay for their children to be well educated.” This is not a sentence, it is a sentence fragment. “And” is a conjunction and must connect something to something else. If you omit this word, the sentence will then be OK.

“the country area.” This is redundant. It’s either in the country or in the area, not both.

“Thus, standard language is not a common language that appears in the rural.” The use of “thus” implies that you have formed a conclusion based on facts, but the sentences before this one don’t state any facts, only opinions. Leave it out. Change “a common language” to “common” and “that appears in the rural” to “in the countryside”. Your sentence should read “Standard language is not common in the countryside.” Rural is incorrect here because it is not a noun.

“Second, technological products are easily be seen in the bigger city, such as: television, radio… etc.” There are many problems here. You can not say “Second” unless you have said “First” in previous sentences. “are easily be seen” is incorrect in both grammar and idiom. I think what you really mean is “are readily found”. “the bigger city” implies that there are only small cities and just one bigger city. Change it to “bigger cities”. “such as” following “bigger city” is incorrect. When you use the phrase “such as”, it must immediately follow the noun or phrase it refers to. Since you’re referring to “technological products”, placing the phrase far away confuses the reader. Correctly placed, your sentence would say “Technological products, such as television, radio, etc., are readily found in bigger cities.”

“These are the tools that can help people to access to the standard language.” Change to “These are tools” rather than “the tools”. Using “the” here makes it seem that there are no other tools available. “to access to” is redundant. Change it to “to access”. “the standard language” is also incorrect for the same reason as “the tools” is incorrect. The use of “the” is difficult to explain to speakers of English as a second language. Basically, it implies that whatever follows it is unique and there are no other possible choices.

“For example: people can hear, watch and absorb the accurate pronunciation, grammar structures through watching TV in their daily life.” Change the colon to a comma. Remove the word “the” in front of “accurate”. Change the comma after “pronunciation” to “and”. Change “life” to “lives”. Your subject is “people”, a plural noun, so it must be “lives” (plural of life) to agree with it.

“The way of speaking by the TV news reporter and weather broadcaster are all standard language.” Change to “The TV news reporter and weather broadcaster’s way of speaking is standard language.” Your version is not exactly incorrect, it’s simply awkward. Also, your subject is “way” (singular) and you use the verb “are” (plural). Your subject and verb must agree and both must be either singular or plural in any sentence.

“Therefore, people live in the big city can gain more from the TV program, media, radio and enable for them to be with the standard language.” This is awkward and rambling. I’m just going to correct it without trying to explain why. Read over my version and compare it to yours and try to see why I changed it. “Therefore, people living in cities can gain by watching TV programs, radio and other media and learn to conform to a standard language.”

“Conversely, living in the rural area, technological products are seldom being used.” This should be “Conversely, people living in rural areas have less access to technology.”

“They watch TV program rarely because they need to work for a long time and/or they have to take care of their children.” Change to “They rarely watch TV programs because they have little free time. Work and child care tasks take all their waking hours.”

“Therefore, they do not have time and have less opportunity to access to the technology products.” Omit this sentence. You already made your point in the previous sentence.

On the contrary, in the rural areas, most of the people work on the farm or work as working class people. They do not receive enough pay for their children to be well educated. In addition, better education opportunities are rarely found in the country areas. Thus, standard language is not a common language that appears in the rural areas. Second, technological products are easily seen in the bigger city, such as television and radio. These are the tools that can help people to gain access to the standard language. For example, people can hear, watch and absorb the accurate pronunciation and grammar structures through watching TV in their daily life. The way of speaking by the TV news reporter and weather broadcaster are all standard language. Therefore, people live in the big city can gain more from the TV programs, media, and radio to enable them to better learn the standard language. Conversely, living in the rural area, technological products are seldom being used. They watch TV programs rarely because they need to work for a long time and take care of their children. Therefore, they have less opportunity to access this technology.

Hi,
You may try grammar checker for it but it has some problems.Despite recent advances in computer technology, it is very difficult for a machine to learn to properly understand the English language. In written English, there are a number of expressions that have multiple meanings and the context of a word’s usage can directly affect the tone of a sentence. These subtleties are simply impossible for a machine to fully comprehend, thus leaving grammar checkers with three main flaws:
A grammar checker may miss important errors.
A grammar checker may accidentally suggest corrections that are inaccurate.
A grammar checker may flag grammatically correct text as incorrect.

So you may take help from online grammar check services to check grammatical errors.

in case you’re asking approximately something interior the previous, the right grammar could be ‘What got here approximately?’ in case you’re asking approximately something that’s occurring as you’re asking, you should ask ‘what’s occurring?’ For the ‘destiny’ you should ask ‘what is going to take place?’ or ‘What ought to take place?’ Grammar is something that ‘adjustments’ with the time and placement, and this is partly the language getting used that determines it, even yet it could additionally be ‘wisely suggested’ in yet another variety in a close-by with a ‘distinctive dialect’ … i’ve got on no account heard of any ‘grammar web pages’ yet whether there are any, i could urge you to be extremely careful approximately using it, because of the fact I actual have a ‘grammar verify’ on the two one in all my observe processors, and that they are the two ‘incorrect’ greater desirable than they’re ‘marvelous’ whilst they’re ‘checking’ what I actual have written. So … do a ‘seek’ using the words ‘grammar correction’ and ‘grammar verify’ and notice in case you will hit upon a fabulous internet site … however the ‘examine the words aloud’ and hear them to make particular they’re ‘somewhat marvelous’ and not in basic terms ‘grammatically marvelous.’ from time to time, ‘grammatically’ merely would not ‘sound marvelous’ and you will ‘hear it’ in case you say the words aloud.