[求助]语法

蓝贝蓝天

For convenience, it is common to speak of  plants as "herbs,"shrubs"and "trees", but it is really no sharp distictions among them.我认为第2个是错的。答案是第3个。of 前不是应该名词吗？有谁会的帮一忙．

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dcx1977

speak of 是固定用法，j是个动词词组，意思是谈及，说到。D是错误的，应改为there is

dcx1977

多打了一个J，没意思的，真抱歉