How to say to use as an excuse/on the pretext in Chinese 借口

不能以缺乏经验为借口，推脱自己的责任。 ( You cannot shirk your responsibility under the pretext of lack of experience. )

不能借口工作忙而放弃对孩子的教育。 ( You cannot give up your child's education on the pretext of being busy with work. )

他借口身体不舒服，提前离开了会场 ( He excused himself because he was not feeling well )

他借口奔丧，却去酒吧泡吧 ( He excused himself, but went to the bar )