如何提高大学英语四级阅读技巧

3. Vocabulary-obstacle and solution
 3.1 Vocabulary:
Vocabulary is the main part in English learning. One’s English level depends on one’s vocabulary. Many students complain that they do not understand what they are reading .It is not the problem of grammar but vocabulary, indeed we almost have learned grammar in high school .What should we learn then?—Vocabulary. If one has the small vocabulary, it is difficult for him to do the English reading. And for every student in English department, the most difficult problem in reading is vocabulary.
There are750.000 words in English Words are constantly being changed. It has been
Proved that the reader’s inadequate store of vocabulary and misuse of words has greatly affected their reading efficiency. To be an efficient reader, you will need to know a lot of words. They can store the new words depend on the dictionary or guessing the meaning of the words through the vocabulary building forms, such as root, prefix, suffix.

3.2 Solution
It is necessary for English learner to have a well-designed dictionary. Especially having an English-English dictionary, but how to use it efficiently? There are some basic points the students can follow when using the dictionary;
(1) Try to use your English-English dictionary first when you need to look up a word, only use your bilingual dictionary if you have to.
(2) Don’t look up every word you don’t understand, only look up the words which interfere with your comprehension.
(3) Always try to guess what the meaning of a word is before looking up .
(4) Whenever you come cross a new word in a passage ,don’t immediately stop to look it up in the dictionary, this can kill your interest and even interfere with your comprehension ,because you are so concerned with the individual words that you are less aware of the content which gives them meaning.
(5) Most words in the dictionary have multiple meaning, when using your dictionary, you must be very careful to select meaning appropriate to the content in which you have found the words that you are looking up. [6]R62
.   In a word, using a dictionary properly, the students will store a large amount of words through looking up the dictionary.
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3.3 Word building form
3.3.1 Root
As we know English words derived from Latin and Greek. “For many centuries, Latin and Greek served as international languages in religion, science and education. The modern scientists or inventors often draw on Latin or Greek root words and use them in new combinations.” [7]R101 So we can guess the meaning of a word from the root for example:

 “For example:
(i) act (做，行为)----                         (ii) Audi (听)
 action   n. 行为，动作;                     audience   n. 听众;  
      enact   vt. 制定（法律） 扮演;              auditorium  n. 礼堂，讲堂
   (iii) Bio (生命)
 biology  n.  生物学; 
 antibiotic adj. 抗生素的
 3.3.2 Prefixes
study the prefix help us understand and remember words, many words derived from Latin and Greek consist of a familiar root and a common prefix .a prefix is a syllable (or sometimes two syllables) attached at the beginning of a word , for example:

(i) 表示“one”  mono-- ,mon—            (ii)表示“two”  di—
monocycle  n.  单轮车;                  dia atomic  adj: 双原子的
   monotone  n. 单调，无变                dioxide  n 二氧化物
 (iii) 表示 out/without/  ex--
   exit  n.出口;
   expense  n.费用 支出
3.3.3 Suffixes
Some words consist of a familiar root and a common suffix .a suffix is a syllable (or sometimes served syllables ) attached at the end of a word to add something to its meaning ,for example:

(i) an (--ian, --en ) 表示行力者               (ii) active   表示主动的
history—historian 历史学家;                 act—active 活跃的；
 music---musician   音乐家                  invent---inventive 有发明才能的
   (iii) able   (--idle )表示被动的
 eat—eatable  可食的;
 move—movable 可移动的 [8]R641-661
If students know a number of commonly prefixes, roots and suffixes, they will easily guess the meaning of new words in their reading.

4. Reading speed
  The unknown word in CET-4 passage is not the only one of the essential factors that hinder reading comprehension. Students should finish the questions in a set time, so the speed of reading is the other factor that influences the testing achievement. There are two basic reading skills (skimming and scanning),they are quite often used in reading.

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