'Do you call that a hat?' I said to my wife.'Youneedn't be so rude about it,' my wife answeredas she looked at herself in the mirror.I sat downon one of those modern chairs with holesin itand waited. We had been in the hat shop for halfan hour and my wife was still in front of themirror.‘We mustn't buy things we don't need,' Iremarked suddenly. I regretted saying it almost atonce. 'You needn't have said that,' my wifeanswered.‘I need not remind you of that terrible tieyou bought yesterday.' "I find it beautiful,"I said. A man can never have too many ties."And awoman can't have too many hats,"she answered.Ten minutes later we walked out of the shoptogether. My wife was wearing a hat that looked like a lighthouse !
语法归纳：情态动词 need 和 must 的用法
一句话总结：情态动词need和must的否定形式与肯定形式差别很大。
肯定式 否定式 其他
need 需要 needn't 不必，不许 do not need 不需要
must 必须 mustn't 不应该 must=should=ought to 应当
精讲笔记：
1. 'Do you call that a hat?' I said to my wife.
“你把那个叫帽子吗?” 我对妻子说。
语言点 call sth.…称某物为……
2.‘You needn't be so rude about it.’my wife answered as she looked at herself in themirror.
“你说话没必要这么不客气我的妻子边回答边照镜子。
语言点 1) need作情态动词时，后加动词原形;常用于否定句和疑问句中，needn't意为“不必”
You needn't be so polite to everyone here.
你不必对这里的每个人都这么客气。
need作实义动词时，有人称和数的变化，后加动词不定式、名词、代词或动名词。
I need to come in person.
我需要亲自来一趟。
My pants need a slide fastener.
我的裤子需要一条拉链：
This suit needs ironing.
这套西装应该熨烫了。(含被动含义)
3. I sat down on one of those modern chairs with holes in it and waited.
我坐在一个新式的满是网眼的椅子上，等待着。
语言点 本句中出现了四个介词：1) on意为“在……上”
of意为“……的'表示所属
with意为“带着……”
in意为“在……里”
