文档介绍：Module 8 Unit 1
Helen Keller
Helen Keller
海伦·凯勒
Let’s learn some
new words.
blind
deaf
dumb
(哑的)
知识点讲解
could和couldn’t的用法
sb. could do sth.
某人过去能做某事。
例如:当我一岁的时候,我会走路。
When I was one year old, I could walk.
sb. couldn’t do sth.
某人过去不能做某事。
例如:当我一岁的时候,我不会跑步。
When I was one year old, I couldn’t run.
see
blind
He was_______ so he couldn’t________.
sing
But he could_____.
But she could__s_u_rf_o_n__th_e__in_t_e_rn_e_t__.