Unit 1 Art Discover Useful Structures 课件-高中英语人教版（2019）选择性必修第三册.pptx

;;;;非谓语动词之todo;不定式的时态和语态：;找出谓语和非谓语;找出谓语和非谓语;举办2022年冬季奥运会是我们国家巨大的荣幸。;习近平主席决定宣布冬奥会开幕。;TheBeijingWinterOlmpicswillopenonFebruary4,2022,whichwillfeature7sports,15disciplinesand109events.;Towinthecompetition,thecompetitorshavetopracticeharddayandnight.;Ourathletesarebelievedtobethebestintheworld.;回归课本;Everyoneseemedtobesatisfiedwiththeopeningceremonyof2022WinterOlympics.;Whatisapredicative?;

系动词分为五种;3、感官动词

感官动词主要有feel,sound,seem,smell,sound,taste,appear,look等;4、变化系动词

这些系动词表示主语变成什么样,变化系动词主要有become,grow,turn,fall,get,go,come,run.;5、终止系动词

表示主语已终止动作,主要有prove,trunout,表达证实,变成之意.;;;;;;常用不定式作表语的情况;例句;Mydreamis___________(become)apainter.

MysuggestionaboutimprovingEnglishis________(memorize)wordseveryday.

Mydutyis____________(help)mystudentsimprovetheirEnglish.

Mynextplanis____________(take)partinacompetition.;（2）以What引导的主语从句，常用不定式作表语，说明主语的内容。

WhatIsuggestistoaskyourfriendsandteachersforhelp.

Whathewantsistosolvetheproblem.

Whatmatters/countsmostistoconcentrateonyourfavouritethings.;Tip2：当主语包含定语从句且其先行词为代词_____或者主语被___________________或形容词________修饰时，其后可接“系动词+不定式”作句子的表语。;（4）表“同意、安排、命令、决定、劝告、愿望、意愿、禁止、预期的结果等”;;（5）动词不定式作表语可用于被动语态，相当于___________________________________，具有情态意义。;（6）某些动词不定式(短语)作表语时，需用主动形式表示被动;??完成句子;不定式作表语，可以省略to的情况;对比填空P11

①Myambitionis___________(work)inthecomputerindustrywhenIgrowup.

②WhatIwanttodois_______(work)inthecomputerindustrywhenIgrowup.

③Themostimportantthingtodois_______(conquer)yourself.

④Themostdifficultthingis_______(get)thiscompanyrunningsmoothly.

;7.用于seem,appear,remain,prove,turnout等之后。;【造句练习】

1.是否参加比赛还有待讨论。

2.他好像在来上学前就已经感冒了。

3.科学家们似乎在这个领域正在不断取得进步。

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