九年级英语Unit12语法(过去完成时)课件.pptxVIP

课题：Lifeisfulloftheunexpected.难点名称：语法(过去完成时)

九年级-下册-第12单元

参赛教师：时间：

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知识讲解

课堂练习

导入

小节

目录

CONTENTS

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Ⅰ.导入：

1.BythetimeI_o_t_u_,mybrother

_h__g_oe_n__i_s_h_o_r_.

Pastperfecttense

gotintheshowergotupnow

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2.BythetimeI_g_o_touts____i_d_e_,thebush__already_e_f_.

thebusleftgotoutsidenow

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3.BythetimeIgot____to__s_ch__o_ol_,IrealizedIha_d_le__ft____mybackpackathome.

leftmybackpackgottoschoolnow

athome

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2.用法：过去完成时可以表示过去某一时刻或某一动作之前完

成的动作或呈现的状态。也就是说发生在“过去的过去”。

Ⅱ.知识讲解：PastPerfectTense过去完成时

1.构成：had＋过去分词

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一1.规则动词的过去式，过去分词

1)一般情况在动词V原形后+edwatched

2)以不发音e结尾的+dpracticed

3)以辅音加y结尾的,去y变i+edstudy---studied

4)以重读闭音节结尾，末尾只有一个辅音字母,

双写尾字母，再+ed

如：stopped

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4.ABArun__ra__n__ru_n_____becomebecame__become

2不规则动词的过去式和过去分词：

speakspo____ke___s_poke____n____write_r_ow___ri_tt_n_____

形式多样，找规律，分门别类，要牢记！

1.

_________________

_________________

mademade3.

cutcut

AAA

builtbuilt

buildmake

____________

_____________

betbet

ABB

cutbet

_______

2.

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3.与过去完成时连用的时间状语

1.Ihadfinishedreadingthenovelbynineo’clocklastnight.by+过去时间

2.WehadlearnedovertwothousandEnglishwordsbytheendoflastterm.

bytheendof+过去时间

3.Theyhadplantedsixhundredtreesbefore

lastWednesday.

before+过去时间

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4.过去完成时态的用法：

1)表示过去的过去，通常由when或by引导的短语或

者从句作时间状语或时间状语从句

①Bytheendoflastyear,IhadlearnedaboutonethousandEnglishwords.

②Bythetimehewastwenty,hehadwonabouttenmedals.

③WhenIgotthere,theyhadalreadyleft.

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2)常用在宾语从句中

①Hetoldmehehadalreadyfinishedhishomework.②Irealizedhehadfooledmeagain.