Unit1Thesesnakesareshort.Let’ssingachant•Theisbig.•Thecatissmall.•Thepigisfat.•Theduckisthin.Theelephantisverybig.1Usefulexpression•What’sthis?It’sachicken.Whatarethey?They’rechickens.Usefulexpression•What’sthis?It’sasnake.Whatarethey?They’resnakes.Usefulexpression•Whatarethey?They’regiraffes.•Whatarethey?They’reelephants.Oralpractice:-----whatarethey?-----They’re…….UsefulexpressionWhatarethey?They’resnakes.Aretheylong?Yes,theyare.Andthesesnakesareshort.long[l:ŋ]:ɔ长的short[:t]ʃɔ：短的Aretheylong?Yes,theyare.tall:[t:l]ɔ高的short：[:ʃɔt]矮的UsefulexpressionWhatarethey?They’regiraffes.Arethetall?Yes,theyare.
