postpone doing 推迟做某事,貌似没有to do的用法. practice doing 表示练习作某事 practice to do 表示尝试做某事 propose做“计划、打算”讲时,加to do 和doing没区别,但是做“提议、建议”时,只能加doing resist 只接 doing risk冒险 也只接 doing suggest做“建议、提议”时,只能接从句或者doing,如果做“使人想起、使人联想到”时候,只能接 to do keep doing 表示“持续做某事” keep to 词组,“坚持、坚守” allow 允许 接doing ,或者做 allow sb to do sth