U nit 2 Less o n 8 Let t ers 教案3T ea chi n g a im s: K now le dg e ai m s: Stu d e n ts c an l iste n, r ea d a n d un d er s tand th ese new words: frie n d, long/shor t ha i r, s tro ng, th in;Students c a n m a ster t he n e w senten ce s: My fr ie nd is、、、, He/S h e is、、、、He/She ha s、、、、;Ab il it y aims: St udents ca n u s e th es e n ew wor ds and sentences to d e s crib e th e i r f riends c orr ec t ly; Affec ti on a i ms: Stud en ts can care mo re about their f r iend s an d cheri s h th ei r fr ien ds h ip、Teach i n g key poin t: The mastery of new w o rds a nd sentences、T eachi ng diff i cul t ies: Ⅰ、The pro n unciati o n o f new wor ds, e speci al ly ”th i n",” friends"、Ⅱ、To he l p s tud en ts understan d and us e wh at w e lear n ed corr ec t ly w i th t h e hel p of s om e p i