use的单相式 现在分词 过去时 过去分词是什么 第三人称单数 uses 现在分词 using
use的过去式和过去分词 plant planted plantedproduce produced producedplan planned plannedinvite invited invitedBig ships were produced in Dalian.Rice is harvested by farmers in autumn.
use三单，过去式，现在分词 uses，used，using
