1. No two words have exactly the same meaning and usage 2. When we write, we must pay attention to its stylistic level(文体层次), degree of emphasis, emotional coloring（感情色彩）, tone and collocation（搭配）. For example:
Large: to modify amount, number and quantity;
Great: when denoting personal qualities, such as courage, confidence, ability, wisdom Attention:
Different meanings for Chinese and English: 1. Send ≠送
2. Family ，home：前者指家里的人，后者指居住的地方 c. Except ，besides:除了 3. General and specific words (一般词汇和具体词汇) 有些词比另外一些词要具体些。
professionals要比scientists, doctors, teachers, lawyers, journalists一般化一些，但是chemists和biochemists要更加具体。
对于写作而言，要尽量使用具体词汇。因为具体词汇有助于使文章清楚，准确，生动和鲜明，具体词汇信息量要大，表达力要强。 a good man kind, honest, just, generous, sympathetic, warm-hearted, selfless, brave, honorable
good food tasty, delicious, nourishing, rich, wholesome, fresh, appetizing, abundant
House mansion, villa, chateau, cottage, bungalow, cabin, hut, shack, shanty, shed, barn
Laugh smile, grin, beam, giggle, titter, snigger, chuckle, guffaw, chortle,
写作的过程中，具体词汇和提供细节应结合起来，这样便可以产生有效果给人印象深刻的文章。
General: It is often windy and dusty here in spring.
Specific: In spring there is often a very strong northwest wind. It carries so much fine dust with it that sometimes that sometimes the sun becomes obscure. There is no escape from the fine dust; it gets into your eyes, your ears, your nostrils, and your hair. It goes through the cracks of closed windows and covers your desks and chairs. 4.词典的使用
对于写作的人来说，词典中最有用的部分是词的释义以及与之配合的例句，解说，用法标识和注解等。不是要了解英语词义，而是要研究词的英语释义，例如dangerous的释义：
dangerous adj. able to or likely to cause danger: a dangerous drug/animal/criminal
所以我们就不能说：I was very dangerous. 应该说：
“I was in great danger”. 5.练习：
比较下列都有连个斜体字，请选出比较确切的一个并说明理由： 1. A few listeners were disinterested /uninterested and dozed off. 2. Though she has grown up, her behavior is often childlike/childish.
3. I am quite jealous/envious of your opportunity to study at such a famous university.
4. Her clothes, though made of cheap/inexpensive material, are quite elegant.
5.This homely/ugly old man is a well-known musician. 6.I am sorry to refuse/decline your invitation. 7.My uncle became fat/stout as he grew older.
8.They all felt sympathy/pity for the victims of the disaster and made denotations.
9.Is that old/elderly woman/lady sitting on the bench your mother? 关于词汇我们就到这里。词汇是语言的基石。英语写作的基础首先要从词汇开始。
1. Complete sentences and sentence fragments (完整句和不完整句)
A grammatically complete sentence is one that contains at least a subject and a predicate (or finite) verb; if the verb is transitive, there must be an object; if the verb is a link-verb, there must be a predicative(表语) or complement（补足语）: He came. She wrote a letter. Dr.Smith is a professor.
这个定义虽然简单，但是许多的同学依然会写出象 Have done it? ;How to use it? 这样的句子。
A complete sentence begins with a capital letter and ends with a period.
Faulty: It was raining hard, they could not work in the fields. Improved: It was raining hard; they could not work in the fields. It was raining hard. They could not work in the fields. It was raining so hard that they could not work in the fields. As it was raining hard, they could not work in the fields.
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