Lesson31Where’sSally?小a小i齐步走,小i乖乖紧闭口，ai,a[eɪ]sail,wait,rain,trainontherail,snailwithatail.Letspractice:paid,main,gainWearewaitingforthetrain.Thesnailshallgosailing.Icanread:Ontherail,bythesail,thesnailwantstofindatail.Newwordsandexpressions•garden•under•tree•climb•who•run•grass•after•across•catn.花园prep.在之下n.树v.爬，攀登pron.谁v.跑n.草，草地prep.在之后prep.横过，穿过...
