请认真阅读下面的课例片段,分析教师对学生语言评价的焦点以及由此对学生产生的影响。 T 21 : Well, time’s up. Time’s up . I know we have...Please be qui e t. Please be qui e t and listen to me. Now we have many animal famil ies , for example , pig family, giraffe family, and also tiger family. Some families even have a babysitter. You know babysitter 保姆 ? Very interesting. Now I want one family to come to the front and show us. And who will be the f irst? OK. You, girls, first. O ther students, please be quiet. I’ ll ask you some questions about this family. U nderstand? Ss: Yes. ( Ss quiet down. ) T 22 : You should introduce yourself first. ( A group of Ss report . T & other Ss listen carefully. Father dolphin introduces his family members first . The n the members introduce themselves one by one. The class is a bit noisy. T. signs to the listeners to be quiet constantly . ) Sa : We have dolphins family. My name is Coca. I think it’s cool. Do you like it? This is my wife. He is...She is very beautiful. And I love her. These are my daughter. They are clever. This is my son. He is very lovely. I love them. I have a happy family. Sb : I’m mother dolphin. My name is Lina. I love my family. These are my kids. I love my husband and kids. I’m shy. Sc : I’m the son. My father is great with me. My mother is very beautiful. We live in water. So I like swimming. If you can’t swim, I can help you. Sd : I’m the daughter. These are my parents. I can play badminton. But I can play it very well. I’m friendly. If you have questions, I can help you. I love my family. Se : I’m the daughter, too. I like eating fish. My family festival is spring festival. So we have a big dinner in spring festival. I love singing. I love my family. I love my father, mother, sister and brother. ( There are some grammar problems with their language. T doesn ’ t cut in to correct. ) T 23 : Very good. Class, t ell me . ( pointing to a “dolphin” ) This is ... f ather or mother? Ss: Father. T 24 : T his is a what family ? Ss: Dolphins. T 25 : Right. A dolphin family. This is father. This is... Ss: Mother. T 26 : And who can play badminton? Ss: she ( pointing to a “ dolphin daughter ” ) . T 27 : OK. If you have questions, you can ask her. T 28 : And who can teach you to swim? Ss: He ( pointing to the “ dolphin son ” ) T 29 : What about dolphin mother? S he is.. . Ss : ( with teacher ’ s help ) She is shy and.. . very beautiful. T30: What a happy family! Thank you so much. Go back to seat, please. ( T and Ss give them a big hand. ) T31: Any other group? OK. You, please. ( Another group come to the front ) Wow, what a big family! Class, I hope you can listen more carefully. Okay? Ss: Okay. ( Another group of Ss do the role-play. T & other Ss listen carefully. ) All group members: We are the koala family. We are a harmonious family. Sf : I’m the koala father. My name is Rival. I always ask my kids to play sports. But they don’t, because they are lazy. Sg : I’m the mother koala... ( The “ koalas ” introduce themselves one by one. Finally ) All group members: Is our family nice? T 32 : Class, i s their family nice? Ss: Yes. T 33 : This is father, mother. The son s . And who is he? He is ... Ss: Uncle koala. T 34 : What can Uncle koala do? ( Two more “ animal families ” introduce themselves . Each time T asks questions about the family. )