throw any further light on the matter

throw any further light on the matter he is so weak that he can't walk any further=he is ( )( )( )( )any further It is still all about being able to run faster,junmp higher and throw further.为什么是further 而不是farther throw throw (THROW throw throw throw throw throw It's still all about being able to run faster ,jump higher and throw further. further further FurTHER 请问Do not throw any litter（ ） the river. He was too tired to walk any further改成同义词 any further look at past points? 啥意思?