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2019-2020年高中英语Module1SmallTalkSectionGrammar-didntneedtodo和neednthavedone教学案外研版语法图解探究发现I didnt need to get a visa.It was an informal party so I didnt need to wear a suit.You neednt have spoken so slowly.You neednt have watered the flowers, for its going to rain.You neednt worry about situations like these if you have good social skills.Need I do the homework first?Yes, you must./No, you neednt/dont have to.I need to know what I can talk about with the Chinese people that I meet.You dont need to take a gift.Do I need to leave my telephone number and address?The doorneeds oiling.The door needs to be oiled.我的发现(1)句中黑体部分表示“没有必要做某事，而实际上也没做”；句中黑体部分表示“本没有必要做某事，而实际上却做了”。(2)句中need 为情态动词，而句中need则为实义动词。(3)由句可知，在回答带有情态动词need 的提问时，肯定回答用must，否定回答用neednt或dont_have_to。(4)由句可知，当主语是表示“物”的名词时，用作实义动词的need后接动名词的主动形式表示被动含义。即need doing相当于need_to_be_done。一、didnt need to do与neednt have done这两个结构都表示“过去不必做某事”，didnt need to do 通常表示“不必去做某事”，实际上也没做此事；而neednt have done则表示“本不必做某事”，从其言外之意可看出，此事已经做了。I didnt need to go to school this Sunday, so I didnt get up until 9 am.我这个星期天不必上学，因此我直到早上九点才起床。(我没去学校)I neednt have gone to school today, for it was Sunday today.今天我本不必去上学的，因为今天是星期天。(我去过学校)即时演练1完成句子They didnt_need_to_do_it_themselves,_so they went home in advance.他们不需要自己去做，所以他们提前回家了。We neednt_have_so_hurried.There is still an hour left.我们本没必要那么匆忙，还有一个小时的时间。We didnt_need_to_take_a_taxi;_its within walking distance.我们不需要打出租车，步行就可以到达。二、need的基本用法1need用作实义动词(1)need 作实义动词时，后面可跟名词、代词、不定式、动名词及复合结构。You dont need to worry about me.你不必担心我。They badly needed a change.他们迫切需要一次变革。(2)当need的主语与need后面的动词是动宾关系时，动名词的主动形式表示被动含义，即need doing相当于need to be done。The flowers need watering/to be watered.这些花需要浇水。即时演练2用所给词的适当形式填空The room needs cleaning/to_be_cleaned (clean), but I have time only on Sunday.They didnt need to_arrive (arrive) so early.Dr Smith said that he needed (need) no payment for his journey.2need用作情态动词(1)need 表示“需要”或“必须”时，通常用于否定句和疑问句。Need you go so soon?Yes, I must.你需要这么快就走吗？是的，必须。You neednt finish that work today.你今天不必把那项工作做完。Needhe do this housework first?他需要先做这些家务活吗？(2)在need引起的一般疑问句中，肯定回答用must，否定回答用neednt。Need I answer the question?Yes, youmust./Yes, you have to./No, you neednt.我需要回答那个问题吗？是的，你必须回答。/是的，你得回答。/不，不必了。即时演练3完成句子Need I e tomorrow?Yes, you_must./No, you_neednt.我明天需要来吗？是的，你必须来。/不，你没必要来。You neednt_e if you are busy.如果忙，你就不必来了。I wonder if I_need_bring_a_camera with me.我想知道是否需要带相机。.用所给词的适当形式填空1He was studying at school, so he didnt_need (not need) to serve in the army.2I told my teacher what had happened and then he told me he had known it. I neednt have_told (tell) him anything.3My classmate spoke good English so I didnt need to_translate (translate) the conversation for her.4Must I tell Mary about it?No, you neednt (not need). Ive told her already.5What a pity! You could have entered free you neednt have_bought (buy) a ticket.6The house badly needs (need) a coat of paint.7If I need you to_e (e) and help Ill call.8Need I pay (pay) for the broken glass?.单句写作1(xx重庆高考改编)Ive ordered some pizza, so we_neednt_worry_about_cooking when we get home tired.我已经订好了一些比萨，因此当我们疲惫不堪地回到家时，不必担心做饭的事情。2(xx湖南高考改编)Ive prepared all kinds of food for the picnic.Do you mean we_neednt_bring_anything with us?我已经为这次野餐准备了各种各样的食物。你的意思就是我们没有必要带任何东西了吗？3I neednt_have_got_there so early because she didnt arrive until 10.我本来没必要那么早到那儿，因为她10点才到。4I neednt_have_bought_so_much_food;_only five people came.我本不必买这么多食物，只有五个人来。5Your clothes need washing/to_be_washed.你的衣服需要洗了。6You_neednt_take_an_umbrella and I will share it with you.你不需要带雨伞，我会和你共用一把。.短文改错A person who we should learn from doesnt need be rich or famous. It could be the people we live with them. For me, its my father.I still remember the days when I was child. Although he had plenty of works to do, but he still stayed with me and played childrens games with me. With time go by, Im in Senior 3 now. It is me who have no time to stay with him now! However, he is still behind me and try his best to make a better life for our family. How handsome and selflessly he is! I am really very grateful for him.In my mind, he is not only my father, but also a hero with me!答案：第一句：need后加to第二句：去掉them第四句：child前加a第五句：workswork; 去掉but第六句：gogoing第七句：meI第八句：trytries/trying第九句：selflesslyselfless第十句：forto
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