The line graph given illustrates the amount of Chinese inhabitants taking four 4 types of course.

Overall, the undergraduates course had the highest figure, while the literacy courses took the lowest place. Although the postgraduates and online training courses were a little bit higher than the lowest one, there was still a big gap among those with the undergraduates.

The figure for undergraduates kept increasing over the 3 years: from a bit lower than 20 to nearly 25 million, on the contrary, literacy course was the only one whose figure lowered over the period. It reached the lowest point in 2010, but then recovered in 2012 with the same number of people enrolled compared to 2008.

Meanwhile post-graduates course stay unchanged with its figure stayed around 2 million. Online training course witnessed a marginal rise in the figure as reached the maximum number in 2012 which was exactly 5 million

Vượng phan hữugraph given illustrates

The line graph given illustrates (poor word choice) the amount (wrong word. Amount is for non-count things.) of Chinese inhabitants (That could be the Chinese people living in Vietnam or in the United States. Your expression is not good.) taking four 4 (redundant,) types of course. (wrong form)

You have not read my advice. Wrong use of vocabulary words! The reader expects that this graph has ONE curve - those Chinese people taking four kinds of classes.

You use the wrong words: figure and witness. Read my advice about these words.

Consider the following opening paragraph. It clearly describes the graph: the time period, the subject, the units of measure, and the four different curves on the graph.

The graph compares the numbers (in millions) of inhabitants in China who are enrolled in each of four types of courses (undergraduate, postgraduate, online training and literacy) between 2006 and 2012.

Thank you for that, I'll notice those mistakes