Trytodo和doing的區別2，打排球怎么扣球3，什么叫沙灘排球怎么玩的呢4，怎么樣打好氣排球1，Trytodo和doing的區別trytodo努力做某事。trydoing試著做某事Itriedtoanswerthequestion.butfailed.Hetrieswalkingtotheschoolinsteadofridingbikes.Usedtodo某人過去常常做某事如Myfatherusedtosmoke.Beusedtodoing某人習慣了做某事如IamusedtolivinginC...