【人教课标选修9】Unit 2 Sailing the oceans

Aim :

Let students master some language points and understand the text .

Contents : Reading : sailing the oceans

1>     Answer some questions about the text

1.       How many ways the passage tells us to keep alongside the coastline .

2.       When can the sailors use the sun to navigate by ?

3.       What was the first instrument to measure the sun’s position .

4.       What proved to be the most accurate and reliable of these earth navigational instruments ?

5.       When did seamen begin to use the compass ?

2>     Language points :

1.       voyage : n. long  journey ,  by sea or in space

2.       mercy : n. kindness ; forgiveness

phr : at the mercy of : under the control of 任由… …的摆布

without mercy 毫不留情地

The beat was at the mercy of the rapid river .

     For mercy ‘s sake 请发慈悲

For Cod’s sake

3.       nowhere adv .not anywhere 无处

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