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Yes, they are.
Sam came into the classroom and saw some friends there. They had cups on their heads. “Why do you have cups on your heads? Why are you laughing?” he asked.
Let’s listen and read.
What are Sam’s questions?
Why do you have cups on your heads?
你们为什么把杯子放在头上呢？
Why are you laughing?
你们为什么笑啊？
cup 杯子
/?/
laugh
/a:/
.
“Why + 一般疑问句”用来询问原因、理由。
Why are you late? 你为什么迟到了？
Because I missed the bus.
答句一般用“Because + 陈述句”
Why ____ he go to China? Because he wanted to learn Chinese.
Why ____ you like eating fish? Because it’s decilious.
did
do
Why do they have cups on their heads?
Why are they laughing?
Read and answer.
Daming told him the story. They planned to play a baseball game. Amy asked Lingling to bring some caps for the game. But Lingling brought some cups. They all laughed. Then they put the cups on their heads and laughed more.
Why do they have cups on their heads?
Because Amy asked Lingling to bring some caps for the game, but Lingling bought some cups.
计划
棒球比赛
baseball 棒球