boorrow的过去式

May I boorrow some English workbooks为什么用borrow? -
may是情态动词。情态动词不能单独使用，只能后面加上动词原形才可以。所以这里用borrow是动词原形感觉有帮助，请采纳！！！还有什么疑问继续追问！
ACHE, ACHY, ACID, ACME, ACNE, ACRE, ACTA, ACTS, ACYL, ADAW, ADDS, ADDY, ADIT, ADOS, ADRY, ADZE, AEON, AERO, AERY, AESC, AFAR, AFFY, AFRO, AGAR, AGAS, AGED, AGEE, AGEN, AGER, AGES, AGHA, AGIN, AGIO, AGLU, AGLY