be in contact with... = 会和某人联络 → 比较像一种状态
如: My colleague, Tina, will be in contact with you shortly. 我的同事,Tina, 在短时间内会与你联络.
Keep in contact with保持联络 →比较强调"保持"这个动作
如: Please keep in contact with us. 请跟我们保持联络.
Get into contact with 要与某人取得联络
如: He tried in vain to get into contact with the local branch.
他试图与当地分部取得连络,但是失败了!
Make contact with 与...联系(跟Get into contact with差不多的意思)
如: The pilot was trying to make contact with his base. 飞行员正试图与基地联系.