keep in touch with 和 get in touc

它们都有保持联系之意。
keep in touch with：
keep in touch with 是"保持联系”与be in touch with 相似,都是强调一种keep保持的状态。如跟朋友道别时,可以说“Keep in touch!"
get in touch with：
get in touch with 是“与...取得联系”,强调动作取得,如I can't get in touch with my old friends after my cell phone was stolen.