人教版高中英语课件：unit 13 interating skills

1、integrating skillsintegrating skills o natures nursery: estuaries skim and find out skim and find out the main top sentencesthe main top sentences task one finding topic sentences topic sentence of paragraph: _ sentence: topic sentence of paragraph: _ sentence: topic sentence of paragraph: _ sentenc

2、e: topic sentence of paragraph: _ sentence: structure of the passage task two: questions: (1)why are estuaries such good places why are estuaries such good places for natures young one?for natures young one? (2)what does density mean in this passage?(2)what does density mean in this passage? (3)how

3、do estuaries affect the water that (3)how do estuaries affect the water that passes through them?passes through them? 4)why are estuaries important to human 4)why are estuaries important to human beings?beings? q1: because the habitat provides all the benefits of the ocean(energy and nutrients)witho

4、ut the dangers (waves and storms). q2: “density “ means the number of species per area in this passage. q3: estuaries absorb nutrients and pollutants from water coming from inland sources,thus cleaning our water. q4: since estuaries act as filters,many pollutants end up in the estuaries. q5: estuari

5、es are important to human beings because we like to study and relax in them and because they contribute to the economy through tourism and fishing. task three: write your own paragraphswrite your own paragraphs topic: _ step 1: step 1: step 2: step 2: step 3:step 3: what will happen to a piece of me

6、tal if you put it in water? describe what happens describe the causes and effects the conclusion sample writing:sample writing: if a piece of metal,or any other object is put in water ,it will dissolve. because the water molecule is made up of one oxygen and two hydrogen atoms. it is polar,that is, it has a slightly negative and a slightly positive end. the two ends make it possible for wat