E-portfolio 6

My common grammar mistakes are verb tense problems, and parallel structure, and fragments.

For the verb tenses problems, I always fail to identify the correct verb tenses. I can’t clarify the perfect and present verb tense. In my writing assignment 2, for instance, there is a sentence: Facing this energy crisis, many governments begin to invest into energy research and build nuclear energy plant to solve this problem.
Since the government has taken actions from past till mow, it is wrong to use present form, it should be: Facing this energy crisis, many governments have begun to invest into energy research and build nuclear energy plant to solve this problem.
Another one is Like in June 2007, for instance, thousands of people showed their opposition against the nuclear power building in Indonesia. Here it is wrong to use past form, but past perfect form because it has happened before June 2007, the correct form is Like in June 2007, for instance, thousands of people had showed their opposition against the nuclear power building in Indonesia. I will have to spend some time to learn how identify the correct sentence form.

My second grammar problem is parallel structure. There are some non-parallel problems in my writings, and here I show some standard problems from textbooks.
Eg1:
My English conversation class is made up of Chinese, Spaniards, and some are from Bosnia.
Corrected one: My English conversation class is made up of Chinese, Spaniards, and Bosnians.

Eg2
The students who do well attend class, they do their homework, and practice speaking in English.
Corrected one: The students who do well attend class, do their homework, and practice speaking in English.

Eg3
The teacher wanted to know which country we came from and our future goals.
Corrected one: The teacher wanted to know which country we came from and what our future goals were.

My third grammar problem is fragments. I am likely to neglect some elements in a sentence. Eg1
The subject I enjoyed the most in high school.
Corrected
The subject I enjoyed the most in high school was physics.
Eg2
The desire of all humankind to live in peace and freedom, for example.
Corrected

The desire of all humankind is to live in peace and freedom, for example.

I will try to avoid such grammar mistakes and spend some time to do the practice.