look for assignment ,look for后面要不要加the

词组前主语是三单,动词要不要加s,例如Tom (look for) his,look 要加s吗 last后面要不要加for? look for the red look for the silver look后面可加什么词?例look for 寻找····越多越好!要带上意思! look for和look look for Look out 什么时候加for 即look out for． look for & look out for 问一个英语词组look for ward to后面是加do还是加doing look over,look at,look for区别 look for,look after,look like,look the same,take care of有什么区