1.4 质谱仪与回旋加速器 课件(共37张PPT) 2024-2025学年人教版（2019）高中物理选择性必修第二册95.pptxVIP

Unit1

Knowingme,knowingyou

LearningObjectives01

LearningObjectives01Discoverandunderstandtheusagesofthepastparticipleasadverbial.03MastercommonmethodsandstrategiesofEnglishgrammar.02Concludeandsummarizetheusagesofthepastparticipleasadverbialbyobservingtheexamplesofpastparticipleasadverbial,andapplythemintherealcontext.

Studentscanbetterunderstandtheusageofpastparticipleasgerund.1.Studentscanmastertheuseofthepastparticipleasagerundandcanpracticemakingsentences.2.Studentscanlearnandmasterthelanguageskillsofpolitelyrefusingtherequestsofothers.0102TeachingFocusesandAnticipatedDifficulties

Grammar02

Lookingatthesentencesfromthereadingpassageandanswerthequestions.Whowasdisappointedinsentence(a)?Whatisapproachedinsentence(b)?Whydoestheauthoruse-edinsteadof-inghere?Because-ingisusedwhentheactionisdonebythesubjectofthesentence,while-edisusedwhentheactionisdonetothesubjectofthesentence.Here,bothdisappointandapproachareactionsdonetothesubjects.IYourfriendship

Lookingatthesentencesfromthereadingpassageandanswerthequestions.-edasadverbialadverbialclausesWhatisthedifferencebetweenthetwogroupsofsentences?Sentences(a)and(b)contain-edasadverbiawhilesentences(c)and(d)containadverbialclauses.Whatisthedifferencebetweenthetwogroupsofsentences?Because-edmakesthesentencesshorterandsoundmoreformalaswrittenlanguage.

-edasadverbial—过去分词作状语用法：1.过去分词作状语的功能2.过去分词作状语的类型3.过去分词作状语的位置其他过去分词与现在分词做状语的区别

1.过去分词作状语的功能过去分词作状语时，表示的动作是主语动作的一部分，与谓语表示的动作或状态是同时或几乎同时发生的，有时先于谓语动词的动作发生；其逻辑主语通常是句子的主语；过去分词与主语之间是逻辑上的动宾关系。Builtthirtyyearsago,thehouselooksverybeautiful.虽然这座房子是30年前建造的，但是它看起来很漂亮。2.过去分词作状语的类型过去分词作状语时，可以表示原因、条件、让步、时间、方式和伴随状况。过去分词作方式状语和伴随状语时可以变为并列分句，作其他状语时可以变为相应的状语从句。用法

3.过去分词作状语的位置通常放在句首或句末，有时也可放在句中。Givenmoretime,wecoulddoitmuchbetter.如果多给我们点时间，我们会做得更好。Di