for example 一般只举一个例子such as两个以上的例子 那这句话怎么可以这样表达的呢?

问题描述:

for example 一般只举一个例子such as两个以上的例子 那这句话怎么可以这样表达的呢?
for example,the wood in your pencil ,the rubber on the end of your pencil,and the paper in your notebook all come from trees.

这里还是一个例子,只是此句主语包含了多个个体,分别是the wood in your pencil,the rubber on the end of your pencil,and the paper in your notebook,
要是改成for example,the wood in your pencil comes from trees,and the rubber on the end of your pencil also comes from trees.
这种情况下才是两个以上的例子