句型
help sb.do sthperctice doing sthwant sb.to do sth/would like sb.to do sthdecide to do sthshow sb.sth/show sth to sbwelcome to ......let's 动词原形no doing ....have fan doing sth/it's a good time ...thanks for doing sthit's time to ...want to do sthgive sth to sbtell about sth...
