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九年级全册《Unit 1 When was it invented？ Section B 1a-1e》名师优质课ppt课件
Lead-in
We love photo chips.
objectives
To know about the history of photo chips.
To learn some key words and useful expressions.
To understand and use passive voice
crispy
salty
sour
by mistake
customer
adj. 脆的；酥脆的
adj. 咸的
adj. 酸的；有酸味的
错误地；无意中
n. 顾客；客户
Words and
Expressions
sour
adj.
the taste experience when vinegar or lemon juice is taken into the mouth
The fruit is still green and eats sour.
Look and say
sour apples /a sour flavor
crispy