I saw him__(sit) on the bench yesterday afternoon
问题描述：
I saw him__(sit) on the bench yesterday afternoon
答
I saw him__(sit) on the bench yesterday afternoon
要用sitting
1.see sb do sth 看见某人做过某事（动作）
2.see sb doing sth 看见某人正在做某事.（状态）
3.be seen to do ,用于被动语态还原to