小升初英语总复习课件 陈述句(20张PPT)

课件20张PPT。第二篇 专项提升第三部分 句型巩固 在英语中，根据句子用途的不同，可以分为陈述句、疑问句、祈使句和感叹句四类。此外，there be句型作为一种特殊而重要的句型，在小学阶段也应注意掌握。知识梳理一、陈述句的概念 陈述句是用来陈述事实或者说话人的看法的句子。它包括肯定句和否定句两种。在书写时，句末用句点；在朗读时，用降调。如： This is a nice book. （ ） Susan likes maths very much. （ ） My father doesn't go to work on the weekend. （ ） They aren't going to climb the mountain this Saturday. （ ）第一节 陈述句二、肯定句变否定句的基本方法 1. 句中含有be动词的句子：变为否定句时只需在be动词后加not。如： I am in Grade Six this year.→I'm not （I am not） in Grade Six this year. Mike is going to play football this afternoon.→Mike isn't （is not）going to play football this afternoon. These are red apples.→These aren't （are not） red apples. It was a fine day yesterday.→It wasn't （was not） a fine day yesterday. We were happy at that time.→We weren't （were not） happy at that time. 2. 句中含有情态动词的句子：变为否定句时只需在情态动词后加 not。 如：Peter can fly.→Peter can't （can not） fly. You should stop smoking now.→You shouldn't （should not） stop smoking now. 3. 句中含有实义动词的句子：谓语动词为行为动词的句子变为否定句时，要根据人称和时态选用助动词do的相应形式（do, does, did），并在其后加 not。如： I like listening to music.→I don't like listening to music. My father likes playing sports.→My father doesn't like playing sports. Grandma does housework every day.→Grandma doesn't do housework every day. He did his homework last night.→He didn't do his homework last night. 【注】（1）加do not， does not或did not改为否定句以后，要把原句的动词改为动词原形，特别是当原句中的谓语动词是第三人称单数形式does或过去式did时，改为否定句一定要记得在doesn't或didn't之后加上do。 （2）肯定句中含有some或some-的合成词时，变为否定句时需将其改为any或any-的合成词。如： I have some pens.→I don't have any pens. There is something wrong with the TV.→There isn't anything wrong with the TV. 4. 几种特殊形式的否定句 （1） 肯定句中含有every-或some-的合成词时，变为否定句时将其改为no-的合成词。如： Everything is ready.→Nothing is ready. There is something on the table.→There is nothing on the table. （2） 肯定句中含有always，usually或ever时，变为否定句时将其改为never。如： He is always late for school.→He is never late for school. I usually go to the park on foot.→I never go to the park on foot. （3） 肯定句中含有many或much时，变为否定句时将其改为few或little。如： Many students know him.→Few students know him. There is much milk in the bottle.→There is little milk in the bottle. （4） 肯定句中含有both，both … and … 或all时，变为否定句时将其改为neither，neither … nor … 或none，并注意谓语动词要相应变化。如： Both of us are students.→Neither of us is a student. Both you and I are right.→Neither you nor I am right. All the students are in the classroom.→None of the students is in the classroom. （5）“I think …”句式变为否定句时，只要在think之前加 don't 即可 ... ...