托福寫作中逗號的使用大全

　　正所謂“細節決議成敗”，在托福寫作中，不起眼標點標記的應用也會影響考生末了的寫作成就，而這恰好是考生最輕易疏忽的，是以，本日留學托福測驗頻道就為考生具體先容下托福寫作中逗號的應用，願望能助考生落井下石!

　　1. 在並列連詞(and, but, for, nor, or, yet )前應用，用來銜接句中的各分句。

　　The principal reason for this is that none of them possesses chlorophyll, andsince they cannot synthesize their own carbohydrates, they obtain their supplies either from the breakdown of dead organic matter or from other living organisms.

　　2. 用逗號來分開一系列單詞、詞組和從句。

　　Furthermore the walls of fungal cells are not made of cellulose, as those of plants are, but of another complex sugar like polymer called chitin, the material from which the hard outer skeletons of shrimps, spiders, and insects are made.

　　They are a major cause of structural damage to building timbers, a cause of disease in animals and humans, and one of the greatest causes of agricultural losses.

　　3. 逗號用來分開與句子其他部門親密相連的簡短插入語或旁白。(較長的，更加突兀的或龐雜的插入身分的則用破折號或圓括號。)

　　Chemical fertilization, for example, helps to produce better crops, but is harmful to the environment.

　　4. 在並列形容詞，即分離潤飾統一個名詞的形容詞之間應用逗號，但也有的形容詞之間不加逗號的。

　　For men, heroism was usually described as bravery and the active, successfulovercoming of adversity.

　　5. 用逗號來分開非限制性潤飾語，即該潤飾語對付句子的意義並不是必弗成少。非限制性潤飾語與限制性潤飾語的差別在於，它縱然被省略，也不會轉變句子的重要意思。

　　(1) 同位語

　　The canopy, the upper level of the trees in the rain forest, holds a plethora of climbing mammals of moderately large size, which may include monkeys, cats, civets, and porcupines.

　　(2) 從句

　　The canopy, the upper level of the trees in the rain forest, holds a plethora of climbing mammals of moderately large size, which may include monkeys, cats, civets, and porcupines.

　　6. 在以"月、日、年"為順序分列的日時代應用逗號。假如這類順序的日期出如今句子中央，則在"年"後也加之逗號。

　　Martin Luther King, Jr., was born on January 15, 1929, and died on April 4, 1968.

　　但在以"日、月、年"為順序分列的日時代，不應用逗號。

　　Martin Luther King, Jr., was born on 15 January 1929, and died on 4 April 1968.

　　在"月"和"年"之間，或"季候"和"年"之間，不應用逗號。

　　The events of July 1789 are as familiar to the French as those of July 1776 are to Americans.

　　產生在1789年7月的那些事宜對付法國人來講，就像美國人對付產生在1776年7月的那些時光同樣熟習。

　　7. 在表現地名時

　　Pandas come from China, Asia.

　　8. 用以將一導言的或改變語氣的詞或短語(如therefore, however, by the way, for instance)與句中別的部門離隔。

　　On the other hand, fungi bring about the decomposition of dead organic matter, thus enriching the soil and returning carbon dioxide to the atmosphere.

　　9. 謄寫對話時用於某某說等詞語先後。

　　"Come back soon," she said.

　　10. 用於短小的引語前。

　　Disraeli said, "Little things affect little minds."

　　以上信息為考生具體先容了托福寫作中逗號的應用，願望考生能有所收成!考生在日常平凡的演習中除要把留意力放在辭匯句型或是整篇文章的構造結構中，還要學會把留意力放在一些影響考生得分的細節方面，信任經由如許的備考，考生必定能獲得滿足的成就!