如何使用贝壳网教学资源

U1 Reading

U1 Grammar and usage

U1 Integrated skills

U1 Extended reading

U1 Project and Assessment

U1 单元综合复习

U2 Reading

U2 Grammar and usage

U2 Integrated skills

U2 Extended reading

U2 Project and Assessment

U2 单元综合复习

U3 Reading

U3 Grammar and usage

U3 Integrated skills

U3 Extended reading

U3 Project and Assessment

U3 单元综合复习

U4 Reading

U4 Grammar and usage

U4 Integrated skills

U4 Extended reading

U4 Project and Assessment

U4 单元综合复习