《We have celebrate the festival since the first pioneers arrived in America》Public holidays PPT课件(第2课时)

《We have celebrate the festival since the first pioneers arrived in America》Public holidays PPT课件(第2课时)-第一PPT
《We have celebrate the festival since the first pioneers arrived in America》Public holidays PPT课件(第2课时)
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外研版九年级英语上册《We have celebrate the festival since the first pioneers arrived in America》Public holidays PPT课件(第2课时),共20页。

since连词,意为“自······以来;······以后”,引导时间状语从句,主句常用完成时态,从句中的动词一般是短暂性动词,常用一般过去时态。

eg:He has worked there since it opened in 2001.自从2001年开业以来,他一直在那儿工作。

【拓展】①since还可用作介词,意为“自······以来;从······起”,与过去的某一时间点连用,如具体的年、月、日、钟点等。

eg:They have been here since October.自从10月以来,他们一直在这里。

②since用作连词时,还意为“既然;因为”,引导原因状语从句。

eg:Since you’ve come,we needn’t go there.既然你来了,我们就没有必要去那里了。

lay动词,意为“摆放(餐具);安放;产(卵);下(蛋)”。其过去式与过去分词都为laid,为及物动词,其后必须接宾语。

eg:Mother laid the baby gently on the bed.母亲把婴儿轻轻放在床上。

【拓展】lie动词,作“躺;平放;位于”讲时,其过去式与过去分词分别为lay,lain;作“撒谎”讲时,其过去式与过去分词都为lied。

by介词,意为“通过······方式、途径、手段”,后常接名词、代词或动词-ing形式,对该短语提问应用how。

重点词组归纳

in the seventeenth century在17世纪

lay the table摆放餐具

as well也

wash the dishes洗餐具

plenty of丰富的;充足的

enjoy oneself玩得高兴

… … …

关键词:We have celebrate the festival since the first pioneers arrived in America PPT课件免费下载,.PPT格式;

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