Form the habit of proofreading whatever you write.  The following is a list of the most frequent errors made by beginners of English writing before their writing habits are formed. Study them carefully and do your best to eliminate them.

(初学英语写作者，必已具备基本英语文法知识，但在练习时，作文中还是出现最常犯的错误，可能自己都不相信。为什么？因为尚未养成英语写作习惯。例如早已知道第三人称、单数、现在式，动词要加“s”，可是写作时就是会忘了加。)

1. In titles you should not capitalize prepositions, articles, and conjunctions unless they begin the title.  All other words are capitalized.
(在书写作文标题时，每一个字的第一个字母要大写，但是前置词、冠词、连结词则不需要，除非它是标题中的第一个字。)
Wrong: The title of his composition is "My Life In The United Kingdom."
Right:  The title of his composition is "My Life in the United Kingdom."
Note:   Prepositions of more than four letters are frequently capitalized.
Example:
In the first hour our teacher asked us to write a diagnostic composition on
"A Little About Myself."

2. You should not use the verb which does not agree with the subject in person and number.
Wrong: The number of the students in my English Composition class are limited to
thirty.
Right:  The number of the students in my English Composition class is limited to thirty.
(the number of是某某的数目，后跟单数；a number of是多数的，后跟复数。)

3. You should not use "to" after the following verbs: behold, bid, feel, have, hear, help, let, make, observe, perceive, see, watch.

Wrong:  I made him to go to a movie with Susan last night.
Right:   I made him go to a movie with Susan last night.
Note:   You may use “to” after “Help.”

4.      You should not use an infinitive after a verb which must be followed with a gerund.
Wrong: It seems no one enjoys to read textbooks.
Right: It seems no one enjoys reading textbooks.

5.      You should not forget to add "s" to plurals.
Wrong: There are fifty student in my English Writing class.
Right:  There are fifty students in my English Writing class.

6. You should not forget to add "s" to the verb following third person, singular number, and present tense.
Wrong:  He go to school every day except Sundays.
Right:   He goes to school every day except Sundays.
(Note: everyday 是形容词，如 everyday life)

7. You should not use illogical sequence of tense.
Wrong:  He said that he will come to see me yesterday, but he did not show up.
Right:   He said that he would come to see me yesterday, but he did not show up.

8. You should not use "but" after "though" or "although."
Wrong:  Although I am a teacher, but I cannot answer all your questions.
Right: Although I am a teacher, I cannot answer all your questions.
I am a teacher, but I cannot answer all your questions.
(在中文中，在虽然之后，一定跟但是。在一句英语中，两者誓不两立。)

9. You should not use "so" after "because."
Wrong:  Because he is not interested in English, so his English is very poor.
Right: Because he is not interested in English, his English is very poor.
He is not interested in English, so his English is very poor.
(在中文中，在因为之后，一定跟所以。在一句英语中，两者誓不两立。)

10. You should not use illogical or double comparison.
Wrong:  His life is like a movie star. (illogical comparison)
Right:   His life is like that of (the life of) a movie star.
Or: His life is like a movie star's (life).
(同一类的东西才可以比较。life 与 movie star 非同类。)

Wrong: He is more poorer in English than most of his classmates.
(double comparison 双重比较级)
Right: He is poorer in English than most of his classmates.
Or: He is much poorer in English than most of his classmates.

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