have problem in doing sth need sth/ to do sth stop doing/ to do stop doing 表示停止正在做的事情。stop to do 停止在做的事情去做另一件事 start to do/doing 无区别 hope to do decide to do please to do help sb do sth have fun in doing sth
have problem doing need to do 被动 need doing=need to be done stop dong 停止做 stop to do停下来去做 start to do =start doing hope to do decide to do be pleased to do help sb(to) do have fun doing