Unit 4 Discovering Useful Structures 导学案-2022-2023学年高一英语人教版（2019）必修第三册

M3 U4 Space Exploration Grammar Motto:Mystery creates wonder and wonder is the basis of man's desire to understand. 神秘创造奇迹，奇迹是人类求知欲的基础。 -Teaching aims 1.Guide students to review the basic usages of "the infinitive"used as the adverbial and attributive. 2.Lead students to learn to use some special cases concerning the p"the infinitive"used as the adverbial and attributive. 3.Enable students to use the basic phrases structures flexibly. 4.Strengthen students'great interest in grammar learning. Teaching difficulties 1.Help students to appreciate the function of "the infinitive"used as the adverbial and attributive. 2.Instruct students to write essays using the proper "the infinitive"used as the adverbial and attributive. =Teaching procedures: Step 1 Lead in---Pair work Look at the following sentences and focus on the italicized infinitives.In pairs,discuss their functions. l.I trained for a long time to f升airplanes as a fighter pilot.(作目的状语) 2.As we all know,an astronaut needs to be healthy and calm in order to work in space..( 作目的状语) 3.First of all,,you must be intelligent enough to get a related college degree.(作目的状语) 4.Some scientist were determined to help humans realize their dream to explore space.. 作定语) Summary: 1.不定式的结构：to+do原形。 2.分析上面的句子，我们知道在描述太空探索时，动词不定式不仅可以用来表目的，还可以用来作 定语，表修饰。 Step2动词不定式用作定语 1.动词不定式作定语常放在名词或不定代词后面作后置定语，表示尚未发生的动作。 Let us give him something to eat. 2.名词前有first,last,next,only等词以及最高级修饰时，其后要用动词不定式。 She was the first woman to win the gold medal in the Olympic Games. 3.抽象名词attempt,.ability,chance,desire,determination,decision,plan,way或不定代词 something,nothing等后面常用不定式作后置定语。 But Janis Adkins has the ability and desire to do useful work. 4.当名词与定语之间存在动宾关系时。I usually have a lot of meetings to attend. 5.当名词与定语之间存在主谓关系时。We must find a person to do the job. 6.当名词与定语有同位关系时。Ne got the order to leave the city. Step 3 Practice (1)The airport (complete)next year will help promote tourism in this area. (2)Do you have anything (do)tonight? (3)The best way (improv