Think carefully about the use of present vs. past tense verbs in your writing. Use past tense most of the time, because the events you describe have already happened. Use present tense to describe a current state of affairs (for example, what the current literature shows). Several instances of future tense ("we will do such and such") just sound very, very odd in the context of a report of research already completed.
写作的时候仔细思考一下一般现在式和一般过去式的用法：大多时候使用的是一般过去式，因为你要报道的研究/实验是已经发生过的事件（比如，A inhibited B in a dose-dependent manner）或别人过去发表的结果（比如，John Doe et al reported…）。使用一般现在式描述当前文献中广为接受的理论或现象，（例如：Tobacco use is linked to lung cancer）或写作时刻的动词（例如：Table 1 shows…; This suggests…）；在一篇研究报告中偶尔会使用将来时态 ("我们将会做…")，通常很少。
• PASSIVE VOICE: Avoid passive voice sentence constructions. They typically add words and decrease understanding. Particularly in the abstract, they increase length unnecessarily.
• CONFUSABLE WORDS: The English language contains many words that look alike but are in fact different words with different meanings. They may or may not sound alike, as well. Some words English words, to make this even more difficult, can function as either a noun or a verb ("affect" and "effect" are two notoriously confused words – both can be nouns and both can be verbs). Your spelling checker may not pick these up, because the incorrectly used word might actually be spelled correctly. And grammar checkers are not really set up to pick out incorrectly used words. So the only way to find any such instances is proofreading by eye.
• ARTICLES: In English, singular nouns are often preceded by an article ("a," "an," or "the"). The articles "a" and "an" are indefinite, referring to any occurrence. Use "a" for nouns that begin with a consonant and "an" for nouns that begin with a vowel (or sometimes a vowel sound, as in "hour). The article "the" is the definite article, referring to a specific instance. Eastern languages (e.g., Chinese, Japanese, Russian) do not use articles in the same fashion that English does, so native speakers of those languages need to be particularly careful to include appropriate articles in their English-language writing.