should和would的用法区别
should无词义，只是shall的过去形式，与动词原形构成过去将来时，只用于第一人称。would也无词义，是will的过去形式，与动词原形构成过去将来时，用于第二、第三人称。
should和would的用法区别
1）should无词义，只是shall的过去形式，与动词原形构成过去将来时，只用于第一人称。
例如：I telephoned him yesterday to ask what I should do next week.我昨天给他打电话，问他我下周干什么。
比较："What shall I do next week?"I asked."我下周干什么？"我问道。（可以说，shall变成间接引语时，变成了should。）
2） would也无词义，是will的过去形式，与动词原形构成过去将来时，用于第二、第三人称。
例如：He said he would come. 他说他要来。
比较："I will go," he said. 他说："我要去那儿。" 变成间接引语，就成了：He said he would come.
原来的will变成would，go变成了come.。
should的用法
should作为情态动词，通常用来表示现在或将来的责任或义务，译作“应该”、“应当”，这时它可以和ought to，be supposed to互换使用。should加完成式：should have done表示“本应该做某事。
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绛旓細- We should protect the environment for future generations.锛堟垜浠簲璇ヤ负浜嗘湭鏉ョ殑涓栦唬淇濇姢鐜銆傦級- Shouldn't you be studying instead of playing video games?锛堜綘涓嶈鍦ㄧ帺娓告垙锛屽簲璇ュ湪瀛︿範鍚э紵锛夋荤殑鏉ヨ锛岃繖涓変釜璇嶇殑鍖哄埆鍦ㄤ簬瀹冧滑鐨勭敤娉鍜屽惈涔夈Would寮鸿皟杩囧幓鐨勬剰鎰挎垨涔犳儻锛宑ould寮鸿皟鑳藉姏鎴栧彲鑳芥...
绛旓細would [wʊd] 琛ㄧず杩囧幓灏嗘潵鎴栨剰鎰 shall [ʃæl] 琛ㄧず寤鸿鎴栨剰鎰 should [ʃʊd] 琛ㄧず寤鸿鎴栦箟鍔 could [kʊd] 琛ㄧず杩囧幓鐨勫彲鑳芥 can [kæn] 琛ㄧず鐜板湪鐨勫彲鑳芥 may [meɪ] 琛ㄧず鏈潵鐨勫彲鑳芥 might [maɪt] 琛ㄧず涓嶅お鍙兘 鐢ㄦ硶:will鐢ㄤ簬...
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