[10-20 18:18:21] 来源：http://www.67xuexi.com 高二英语教案 阅读：850次
The girl survived her parents .
Survivor n. the person or thing of surviving .
6. dusk n. time before night
at dusk 在黄昏时刻
Period three : comprehending and language
I Comprehending
Read the passage and answer the following questions .
1 . What is the use of a bearing circle . astrolabe , quadrant or sextant ?( )
What is the use of a compass ? ( )
A to set the course of the ship
B to measure the position of the ship
C to measure the speed of the ship
D to tell the time
2. Why are speed and time important in working out the longitude of a ship ?
3. Why is the position of the sun and various stars useful for working out latitude ?
4. Suppose you were a sea captain aiming to sail round Africa Discuss in groups.
(1) what skills would you seek in your sailors ?
(2) what problems would you anticipate for this journey ?
II Learning about language
Do exercises 1 . 2 and 3
Exerise1 Replace the words underlined by ones of similar meaning form the reading passage .
1. Seeing the dark clouds above him , George hurried for home .
2. Sailing a boat alone far away form the shore made Flora’s parents worry about her safety .
3. Clare , would you please put your bicycle
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