大学英语：There are many plants

　　1. There are many plants which have neither roots nor leaves nor flowers， while there are some animals which seem to have all three. （neither…nor句型表示两者都不） e.g. People who can neither hear nor speak talk to each other with the help of their fingers. （并列动词）；My doctor told me I should neither smoke nor drink.（并列动词）；She neither knows nor cares what has happened to her ex-husband. （并列动词）

　　2. 冠词问题：The blue haze，like smoke，is the dividing line between the heavens and the earth.（世界上独一无二的东西）。

　　3. You may look at a group of cows standing under the trees or catch a bee at his early drink in a morning-glory bell. Look at 为感官动词，其后可以加动词原形，也可以用动词的ing形式。用动词原形表明看到了全过程，用动词的ing形式表示看到动作正在进行中。