A few students go to school by bike.
看你要表达的含义。
少数但是有的话用 A few studens go to school by bike.
几乎没有的话便用 Few studens go to school by bike.
A few of students go to school by bike .少数的忘记了 对不起哈 so··
A small number of students ride their bikes to school.
"small number of "少量的,一小部分
当然还有别的表达方式。
Few students go to school by bicycle.
Only a few students ride bikes to school.