Unit 6When was it invented?Section B(1a-2e)【Learning Aims】1．能够通过听说学习与食物有关的词汇。2．让学生通过阅读理解如用一般过去时的被动语态描述发明史。【学习】单词及短语：sour，by mistake【学习难点】学会用一般过去时的被动语态对更广泛的发明进行描述。soursweetsaltysaltysweetsoursalty1b. Write the name of a different food after each word. T F T F1c Listen and circle T for true or F for false.1. Potato chips were invented by mistake.2. They were invented in 1863.3. The customer thought the potatoes were not thin enough.4. The customer said they were not salty enough.5. George wanted to make the customer happy.6. The customer was happy in the end.T FT FT FT FThe history of Potato Chipswere invented1853thincrispy1d Listen again. Complete the sentences.really salty.Listen to the tape for third time，finish the complementary tasks.( )1.When were potato chips invented?A．In 1853.B．In 1850.C．In 1835.( )2.Who invented the potato chips?A．A customer.B．A cook.C．A boss.( )3.Why was the plate of fried chips sent back?A．Because they were crispy.B．Because they were cut thin.C．Because they were cut too thick.ABC1e Make a conversation about the invention of the potato |
