2014秋四年级英语上册 Module 2 Unit 2 Amy painted a picture
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phone + ed = phoned
9
Yesterday, Sam watched TV.
10
Yesterday, Amy painted a picture.
11传统机械按键设计？
传统的机械按键设计是需要手动按压按键触动PCBA上的开关按键来实现功 能的一种设计方式。
15
16
Guessing game 猜一猜
Yesterday, Amy _________.
played the piano
17
Yesterday, Lingling ____.
played the flute
18
Yesterday, Daming _______.
played the drum 19
Sports meeting
• Last Saturday, there was a sports meeting. What did Amy/ Lingling / Daming do yesterday?
20
21
Last Saturday, Amy _________.
played pingpong
22
Last Saturday, Sam ________.
played basketball
23
Last Saturday, Daming_______.
played football
24
Module 2
Unit 2 Amy painted a picture.
1
Yesterday, Mr Smart cooked noodles.
2
Brainstorm 头脑风暴
noodles
dumplings
soup
rice
porridge
3
Yesterday, Amy cooked ____d_u_m__p_.lings
传统机械按键结构层图：
按键
PCBA
开关键
传统机械按键设计要点：
1.合理的选择按键的类型，尽量选择 平头类的按键，以防按键下陷。
2.开关按键和塑胶按键设计间隙建议 留0.05~0.1mm，以防按键死键。 3.要考虑成型工艺，合理计算累积公 差，以防按键手感不良。
14
Birthday party
• Yesterday, there was a birthday party. • What did Amy/ Lingling / Daming do yesterday?
4
Yesterday, Daming cooked _______.
soup 5
Yesterday, Sam cooked ____.
rice 6
Yesterday, Lingling cooked ____.
porridge
7
Yesterday, Tom helped him.
8
Yesterday, Ms Smart phoned Grandma.
9
Yesterday, Sam watched TV.
10
Yesterday, Amy painted a picture.
11传统机械按键设计？
传统的机械按键设计是需要手动按压按键触动PCBA上的开关按键来实现功 能的一种设计方式。
15
16
Guessing game 猜一猜
Yesterday, Amy _________.
played the piano
17
Yesterday, Lingling ____.
played the flute
18
Yesterday, Daming _______.
played the drum 19
Sports meeting
• Last Saturday, there was a sports meeting. What did Amy/ Lingling / Daming do yesterday?
20
21
Last Saturday, Amy _________.
played pingpong
22
Last Saturday, Sam ________.
played basketball
23
Last Saturday, Daming_______.
played football
24
Module 2
Unit 2 Amy painted a picture.
1
Yesterday, Mr Smart cooked noodles.
2
Brainstorm 头脑风暴
noodles
dumplings
soup
rice
porridge
3
Yesterday, Amy cooked ____d_u_m__p_.lings
传统机械按键结构层图：
按键
PCBA
开关键
传统机械按键设计要点：
1.合理的选择按键的类型，尽量选择 平头类的按键，以防按键下陷。
2.开关按键和塑胶按键设计间隙建议 留0.05~0.1mm，以防按键死键。 3.要考虑成型工艺，合理计算累积公 差，以防按键手感不良。
14
Birthday party
• Yesterday, there was a birthday party. • What did Amy/ Lingling / Daming do yesterday?
4
Yesterday, Daming cooked _______.
soup 5
Yesterday, Sam cooked ____.
rice 6
Yesterday, Lingling cooked ____.
porridge
7
Yesterday, Tom helped him.
8
Yesterday, Ms Smart phoned Grandma.