Unit 4 Space Exploration Discovering Useful Structures 动词不定式做状语课件-2024-2025学年高一英语人教版（2019）必修第三册

动词不定式作状语 The teaching aims: 引导学生归纳动词不定式作状语的意义和用法； 能在语境中正确运用。 Step1 lead in 1.I trained for a long time to fly airplanes as a fighter pilot. 2. As we all know, an astronaut needs to be healthy and calm in order to work in space . 3.First of all, you must be intelligent enough to get a related college degree . Step2 finding and exploring 1.I trained for a long time to fly airplanes as a fighter pilot.   2. As we all know, an astronaut needs to be healthy and calm in order to work in space .   3.First of all, you must be intelligent enough to get a related college degree . 目的状语 目的状语 目的状语 step three summary 不定式作状语 不定式可以在句子中作状语，通常可用来表示目的、结果、原因等。 1.不定式作目的状语 They came here to seek a new life.他们来这里寻求一种新生活。 He started early in order not to be late.为了不迟到，他早早就动身了。 不定式前可加in order或者so as构成以下两个句式做目的状语，功能同“to do” （1）in order to+动词原形（可置于句首或句尾），意为“为了”。 （2）so as to+动词原形（只能至于句末，不能置于句首）意为“为了”。 John went to California in order to make a fortune. 2. 不定式作结果状语（通常出现在句尾,常用于固定搭配中：only to do; too...to do；so...as to do; such...as to do;...enough to do; ） （1）表示出人意料或者不太好的结果时,用only to do. I hurried to the station, only to find the train had left.我匆匆赶到车站，结果发现火车已经开走了。 (2)"too …to …"结构常表示"太……而不能……" He is too weak to do the work.他身体太弱，不能做这项工作。 3. 不定式作原因状语（一般不置于句首）：不定式的动作先于谓语动词，但很少用完成式。大部分表达情感等的原因。有以下3种句型： （1）主语+be+表情绪或感情的形容词+不定式，用于这一结构的形容词主要有：afraid，angry，anxious，glad，happy，sorry，amazed，delighted，disappointed，excited，shocked，surprised。 We were very excited to hear the news.我们听到这个消息很兴奋。 （2）主语+表示情感的不及物动词+不定式。 I couldn't but laugh to hear such a funny story.听到这样一个有趣的故事，我忍不住笑了。 （3）主语+be+说明人的品质或行为的形容词+不定式。 The boy was clever to solve the problem so quickly.这个男孩这么快就解决了这个问题，真聪明。 时态 主动式 被动式 一般时  to do  to be done 完成时  to have done  to have been done 进行时  to be doing  无 动词不定式的形式： Step four 及时演练 1.I trained for a long time ______(fly) airplanes as a fighter pilot. 2.As we all know, an astronaut needs to be healthy and calm in order to ______(work) in space. 3.First of all, you must be intelligent enough ______(get) a related college degree. Step five homework The task 3 on page 27 in your English textbook $$