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.
For men, heroism was usually described as bravery and the active, successful lover coming of adversity.
Martin Luther King, Jr., was born on January 15, 1929, and died on April 4, 1968.
但在以日、月、年为次序排列的日期间，不用逗号。
Martin Luther King, Jr., was born on 15 January 1929, and died on 4April 1968.
在月和年之间，或季节和年之间，不用逗号。
The events of July 1789 are as familiar to the French as those of July 1776 are to Americans.
发生在1789年7月的那些事件对于法国人来讲，就像美国人对于发生在1776年7月的那些时间一样熟知。
Pandas come from China, Asia.
The principal reason for this is that none of them possesses chlorophyll, and since they cannot synthesize their own carbohydrates, they obtain their supplies either from the breakdown of dead organic matter or from other living organisms.
Chemical fertilization, for example, helps to produce better crops, but is harmful to the environment.
同位语
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.
从句
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.
Disraeli said, Little things affect little minds.
On the other hand, fungi bring about the decomposition of dead organic matter, thus enriching the soil and returning carbon dioxide to the atmosphere.
Come back soon, she said.
以上就是记者为大伙总结的逗号在托福写作中运用的状况。值得注意的是，英语中逗号的用法与中文完全不同，所以考生不可以用中文思维运用逗号。虽然逗号的用法看着只不过一个简单的问题，但这种小事大概对你的托福写作导致不利影响，所以大伙要引起看重。
