my commom grammer mistakes

Here is the summary about the two grammar mistakes I always make in writing an essay.

First of all, I do not pay enough attention to word forms when I write an essay. For example, 'I should have told him the truth.' indicates that I did not tell him the truth. But sometimes, I used a negative sentence to express this meaning, 'I should not have told him the truth.', which is not correct. Not only the tense of a verb matters, the plural or single form of the word also makes a big difference. For instance, 'wood' means that kind of material; on the contrary, 'woods' means forests. The meaning of the word changes dramatically just by inserting a letter 's'. Moreover, we need to use a noun form rather than a verb form after some verb infinitive. What follows 'look forward to', for example, should be 'seeing' instead of 'see'.

Secondly, I often make a mistake on using parellel structure. The sentense structure will become very confusing if we use several unparellel phrases simutaneously. For example, 'this natural disaster is caused by unaccurate weather prediction and the officials did not take actions in time. Rather, we should change 'the officials did not take actions in time' to 'slow official actions'. Alternatively, the whole sentence could be changed to 'this natural disaster is caused by the facts that the weather prediction was not accurate and the offiicials did not take actions in time'. Both the two ways has successfully avert the problem of confusion.

To sum up, I need to fucus on the word forms and parellel sentence structure in writing essays.