6、.阻止某人做某事Thepolicemankeptthechildrenfromcrossingtheroadwhenitwasdangerous.危险的时候,这位警察阻止了孩子们过马路。keepintouchwith与……保持联系Wemust keep in touch with each other.keep(on)doingsth.继续做某事Hekeptsittingthereforhalfanhour.他在那儿站了半个小时Theykeptonworkinginthefield,thoughitwasraining.虽然天正在下雨,他们还是继续在田里干活。18correctadj.正确的