动词过去式以I-A-U形式的有哪些?如BEGIN-BEGAN-BEGUNSWIM-SWAM-SWUM

问题描述:

动词过去式以I-A-U形式的有哪些?
如BEGIN-BEGAN-BEGUN
SWIM-SWAM-SWUM

sing-sang-sung
ring-rang-rung
drink-drank-drunk
swim-swam-swum
begin-began-begun