unit2THisismysister.[共38页][共38页]

unit2THisismysister.What’sthis?It’sanorange.Whatarethese?Theseareoranges.What’sthat?It’sabook.Whatarethose?Thosearebooks.Thisishispen.These（这些）arehispens.单数：复数Thisisherbook.Theseareherbooks.单数：复数：Thatisherorange.Those（那些）areheroranges.单数：复数：Thatishisjacket.Thosearehisjackets.单数：复数：单数复数thisthesethatthoseam/isare注意到了吗？Goodmorning,everyone.I’mDave.Nice...