the professor is known 【】(have)a good command of English

问题描述:

the professor is known 【】(have)a good command of English

for,但是不能用have,因为for是介词,后面应加ing形势,be known for,因…而闻名

the professor is known for having a good command of English

the professor is known (to) (have)a good command of English