I explain why you study Chinese difficultly Chinese is a pictographic language. We use characters record information rather than words. The foreign learners will focus on the word memorizing , and they tend to memorize pinyin of words first. Because the pinyin is more easy for them to memorize. That is the problem. when you only remember the pinyin (pronunciation) of the words , you may write a wrong character. for example, you want to write 汉字（hanzi）, and you type it by pinyin inputting app. it will give you the optional words, first 汉子，second 汉字，if you don't remember the right Chinese character, you tend to type the 汉子，which is wrong here, instead of the right one 汉字. so you must memorize Chinese characters when you are learning vocabulary. I know it is tough, so does it for native speakers. When we are at primary school , we exercise to write the characters for two classes every day. and parents will asked children to recognize the characters they meet everywhere. finally，we can master appropriate 2000 characters when we are in grade three at primary school. if you can recognize 2000 character you would read newspapers and common books. After that , we start to write a simple notebook about topics like my family, diary. when we are in five grade, we can write an essay with 500 characters. Note that we don't use the number of words as a requirement for an essay，but we use that of characters. Characters is the minimum unit, not words. We seldom memorize 电脑（computer），we learn 电(electricity) and 脑(brain) separately. Compounding is a very important word formation. we will combine 电 and 脑 into 电脑, a compound word. the combination of words is flexible. we can also make up plenty of words like 电水壶（kettle）电话(telephone) 电灯(lamp), and so on. almost all the words that contains two or more characters is compound words. Actually , Chinese characters correspond to English words, while Chinese words correspond to English compound words.Thus, we can use 2000 characters to create numerous words expressing all the meaning besides professional subject. So I suggest not to memorize words but the characters, then combine them into various words. That would be interesting and effective.

Authentic expression is the problem I want to overcome I tested my English level. it is an intermediate level. I can write a sentence that doesn't have a big grammar mistake. you can understand me, but feel something wrong or strange in my sentence as I see what Chinese learners, who think themselves at a high level, write. there is a difference in the component of language, like structure, collocation, and word order. But I think the most difficult for me is the collocation. I would put together the two words that are suitable for each other in Chinese when I make phrases. for example, I would make up a collocation "Junor learner" when I want to describe a learner at the beginning. Because we tend to translate the Chinese collocation into English directly, word to word.That will affect authentic expression.

I learn many historal knowleges of the world I had leant the world history in middle school. But it is very simple in the content. Recently, I learned western history and arab history. It boarden my horizon. I know there were two civillization centre other than China in the ancient era. They trade with each other, and learned from each other. Also, there were clashes and wars between them. Crusader Army defend the arabic troops at the teritery of East Rome. They built castles at the eastern coast of Mediterranean. The wars last for more than 200 years. It still have influence in the modern political of Middle East.

this is an abstract of my scientific paper. could you help me revise it ？ Abstract: The glass transition temperature (Tg) of amorphous Polystyrene (PS) was systematically studied by differential scanning calorimetry (DSC), which is a common experimental method to investigate Tg, and a Molecular Dynamics simulation with the COMPASS II force field. Data from DSC experiment and simulation was processed with the same method to obtain Tg values. The models at various degree of polymerization (DP) can accurately simulate the experimental Tg value of PS after a process of gradually lowering the rate of temperature rise. The difference of Tg between the simulation and experiment values is less than 3K. Additionally, the glass transition point of the model during the temperature rise and fall process is reproducible. A fitting equation based on the Tg values from low DP models can be used to predict Tg values of high DP polymer, which has practical value in the synthesis of polymers.

Is there some mistakes in the paragraph? The training of the engineering capabilities is the core of higher engineering education, which is the requirement of transformation of traditional engineering major to new one. The training system of engineering capabilities, as an essential component part of cultivation plan for composites materials and engineering major, plays an important role in the talent training quality. After the several years’ practice and research, an training system including the step-by-step training of experimental capabilities, training and strengthening of engineering practice ability was established, which had beneficial effects on the improvement of engineering capabilities, innovative thinking and innovative capabilities of students and therefore made a favorable implementation effect.

If you would not like to reject somebody's request, then you will bear more burden I usually don't like to reject someone's request, especilly from a kind person. I think it may hurt the person that you reject his request directly. But that will let others see that you are more likely helpful. More peole would turn to you. As a result, you get more extra burden on your shouder.

Is there difference between "continued" and continuous when they are used as adjectives. I know they can both describe a movement without interruption. But is there any difference?

Does the "which" in the below sentence use correctly? The Peking University Health Science Center said on its website on Monday that the Filipino student was enrolled into clinical medicine major, which will be taught in Chinese

what is the difference between rage and fury I know they are both refer to a violent angry. But is there a subtly different meaning?