Unit 1 The Changing World Section B 1a-2c 课件(共22张PPT)

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Unit 1 The Changing World Section B 1a-2c 课件(共22张PPT)

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(共22张PPT)
Grammar Focus I:一般过去时
核心概念:使用一般过去时(Simple Past Tense)来记录完全在过去结束的历史事实和动作。
文本证据:
1.It took 10 hours...
2...an old railway line built in 1901.
语法法则:动作已结束。时间已关闭。
Grammar Focus II:现在完成时
核心概念:使用现在完成时(Present Perfect Tense)来表达一个过去的动作对当前产生了结果或持续的影响。
文本证据:
1....has already cut travel time...
2....people who live here have become rich.
语法法则:动作始于过去,但当前的结果才是关键。
过去(Past)
现在(Now)
Grammar Focus III:“那时” 对比 “现在”
那时 THEN(一般过去时)
1.焦点(Focus):旧的现实。
2.关键词(Keywords):built in 1901, used to take, were slow.
3.效果(Effect):向我们展示问题所在。
现在 NOW(现在完成时)
1.焦点(Focus):现代的影响。
2.关键词(Keywords):has cut, have benefited, have become.
3.效果(Effect):向我们展示解决方案和进步。
wide
bridge
capital
corn
product
adj.狭窄的
n.村民
sandy
soil
sandstorms
n.奇迹
government
bushes
v.带领
adj.人造的
result
Write a 50-word report about how a specific bridge, road, or park changed your local life. Use at least three vocabulary words from today’s lesson.

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