介绍:
音标：【 f 】 【 v 】
单词训练
1.Leaf 2.Proof 3.Safe 4.Surf
5.Vast 6.Van 7.View 8.Vowel
句子训练
1.It is one of my favorite novels.
2.I felt as if he’d never know fatigue.
大家还在听
