Unit 2 Sailing the oceansI. 单元教学目标技能目标 GoalsTalk about early navigation Talk about discovery and exploration of an unknown landLearn about some famous navigators and explorersLearn to express the cause and effectLearn to use the PredicateWrite a report about a navigator or an adventurous storyⅡ.目标语言词汇voyage mercy encyclopedia alongside exploration minimum celestial pole equator horizon overhead seaweed nowhere offshore accelerate outward tide secure log knot nautical magnetic random awkward reference precise simplify portable shortcoming update tendency reliable swoop parcel peck cliff expedition compulsory survival incident departure crew deposit dilemma drawback dusk routine reckon reckoning starvation psychology psychologically tension gradual gradually foresee thirst tear hardship jaw background roarat the mercy of nautical mile set loose jaws of death功能句式Cause & effect Why are you...? How could you...?Why did you...? Because of....It was because.... The reason is that....As he.... Since she....Now that.... Therefore,...He was due to.... It is ..., so I’m afraid....That's why.... He.... so he is ill with fever after the voyage.1语法复习谓语(The Predicate)So how did they navigate so well?As you can see from the map we kept to straight course pretty well.The tension in the boat got worse as the supply of food and water gradually disappear So accomplished navigators were able to use it to plot their position.Captain Cook had led three great Pacific voyages during his life.I’ll go and get ready to begin work.重点句子1. You may well wonder…(p12)2. … show that they were not at the mercy of the sea even though…(p12)3. Sea birds could be used to show the way to land when it was nowhere to b...