take a taxi和by taxi的区别

题目

take a taxi和by taxi的区别
要详细的解释,答得好的加分

答案

take a taxi,动宾结构,可以构成一个谓语了,比如 You can take a taxi.
by taxi,只能做状语,不能说 You can by taxi,前面必须有主谓结构,You can come by taxi.