[2017年整理]外研社高中英语必修四module2祈使句.ppt

Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd. 祈使句（Imperative Sentence）可以表达说话人的意愿、请求、叮嘱、号召、命令或建议，它的主语you （听话人）通常省略，谓语动词用原形，句子末尾用感叹号或句号，读时用降调。 Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd. 1. 祈使句的肯定形式 be型（系动词原形be＋表语＋其他） Be careful! Don‘t go too high. Be quiet, everyone! 2) do型（行为动词＋宾语＋其他） Come in, please! Please open your books! 3) let型（Let＋宾语＋动词原形＋其他） Let me have a look. Let me help you. Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd. 1) be型（Dont＋be＋表语） Dont be lazy! Never be late again. 2) do型（Dont＋行为动词原形＋其他） Dont throw the ball like that. Dont worry. Ill soon be all right. Never do it like that. Don’t anybody say a word. 2.祈使句的否定形式 Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd. 3) let型有两种否定形式： 1) Let＋宾语＋not＋动词原形＋其他。 Let him not go there. Lets not waste time. 2) Dont＋let＋宾语＋动词原形＋其他。 Dont let her go there. Dont let the water run into the  room. 4) No+ v-ing/n. 禁止做某事 No parking/smoking/admission! Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd. 3. 祈使句的类型 1). 不带主语的祈使句 Be careful next time! Come and see me whenever it is convenient to you. 2). 带主语的祈使句； 为了加强语气或指明同谁说话，可在动词前加上主语。加上主语时，由于是面对面说话并直呼其名，故不论第几人称，动词均用原形，不考虑主谓一致问题。 Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd. Nobody move！ Mary come here —everybody else stay where you are. You put on more clothes. It’s cold outside. 3). (条件)祈使句 +and / or+ 简单句(结果) 此句型为“条件与结果”并存的句式，其中的祈使句可转化为if条件句。 Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Asp