初中英语语法课件 现在完成时
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I haven’t finished my homework. 我还没有完成作业。
疑问句:Have / Has+主语+过去分词...?
Have you finished your homework? 你完成作业了没？
现在完成时的用法
表示到现在为止已经完成或刚刚完成的动作。 Now we have planted all the trees. 截止目前，我们种完了所有的树。 He has just come back. 他已经回来了。 They have built many buildings in this city. 他们在这个城市建成了好多建筑物。
重读闭音节结尾，末尾只有一个辅音字母，先双写该辅音字母，再加“ ed ”。 drop---dropped--dropped
过去分词的变化（不规则）
A.过去分词与不规则动词的过去式形式一样 have—had—had spend —spent—spent make—made—made say—said—said find—found—found hear—heard—heard meet—met—met leave—left—left fly—flied—flied
过去分词的变化（不规则）
B.过去分词与过去式形式不一样 take—took—taken see — saw — seen speak —spoke—spoken sing—sang—sung drive—drove—driven be—was/were—been go—went—gone
过去分词的变化（不规则）
现在完成时
现在完成时定义
现在完成时定义三要素： 表示到现在为止已经完成或刚刚完成的动作。 一件发生在过去的事情对现在产生影响。 一个动作开始于过去，并持续到现在（也许还将持续下去）。 We have known each other since 2005. 我们从2005年认识的。 I have lived in Wuhan for several years.
辨析 have been to和 have gone to
have been to someplace. 曾经去过某地，已经回来． has gone to someplace.某人去了某地，还没有回来． My father has gone to Shanghai for a meeting. 他（已经）去了上海。 My father has been to Shanghai for a meeting. 他（曾经）去了上海。
C.过去分词，过去式与动词原形一样 cut—cut—cut put —put—put let—let—let read—read—read
现在完成时的标志词1 标志词：already(已经), yet(已经)
already: 常用于肯定句中. yet: 常用于否定句,疑问句尾.
I have already seen this film. 我已经看过这部电影了。 I haven’t seen this film yet. 我还没有看这部电影。 Have you seen this film yet? 你看过这部电影了没？
我在武汉住了好几年了。
现在完成时结构
肯定句：主语 + have/ has + 过去分词+...
I have finished my homework. 我已经完成作业了。
否定句:主语+haven’t ( have not) +过去分词… 主语+hasn’t ( has not ) +过去分词...
(窗户现在是坏的) (我现在没有钥匙) (不了解书的内容)
(手去开始并持续到现在的动作或状态。 She has learned English for 5 years. 她学英语已经五年了。 He has lived in Beijing since he was born . 从他出生那天起就住在北京。 Has he lived in Shenzhen for 4 years? 他住在深圳四年了吗？
现在完成时的标志词2
since: (自…以来) since+时间点 He has stayed here since 5 o’clock. since+ 时间段+ ago He has stayed here since 5 hours ago.
现在完成时的标志词2
since+ 从句 She has taught English since he came here. for: (长达）for+ 时间段 He has kept the book for 2 weeks.
过去分词的变化（规则）
一般动词，在词尾直接加“ ed ”。 work---worked---worked
以“ e ”结尾的动词，只在词尾加“ d ”。 live---lived---lived
以“辅音字母 + y ”结尾的动词，将 “y” 变为 “i”，再加“ ed ”。 study---studied---studied
用for 或since填空
1.Mr. Brown has had his TV _f_o_r___ 15 years.
2.I’ve taken driving lessons ___s_i_n_c_elast month. 3. My sister has had her cell phone ___f_o__ra month . 4. My friends haven’t visited me _s_i_n_c__emy birthday. 5. We haven’t used our car _f_o__r_ a long time . t 6. She hasn’t had a good cup of coffee f_o_r___years. 7. Tom has worn glassessi_n__c_e___he was 7 years old.
现在完成时的用法
表示过去发生的动作,强调结果或对现在的影 响。
Someone has broken the window. I have already lost the key. I haven’t read that book yet . I have just cleaned my hands.
疑问句:Have / Has+主语+过去分词...?
Have you finished your homework? 你完成作业了没？
现在完成时的用法
表示到现在为止已经完成或刚刚完成的动作。 Now we have planted all the trees. 截止目前，我们种完了所有的树。 He has just come back. 他已经回来了。 They have built many buildings in this city. 他们在这个城市建成了好多建筑物。
重读闭音节结尾，末尾只有一个辅音字母，先双写该辅音字母，再加“ ed ”。 drop---dropped--dropped
过去分词的变化（不规则）
A.过去分词与不规则动词的过去式形式一样 have—had—had spend —spent—spent make—made—made say—said—said find—found—found hear—heard—heard meet—met—met leave—left—left fly—flied—flied
过去分词的变化（不规则）
B.过去分词与过去式形式不一样 take—took—taken see — saw — seen speak —spoke—spoken sing—sang—sung drive—drove—driven be—was/were—been go—went—gone
过去分词的变化（不规则）
现在完成时
现在完成时定义
现在完成时定义三要素： 表示到现在为止已经完成或刚刚完成的动作。 一件发生在过去的事情对现在产生影响。 一个动作开始于过去，并持续到现在（也许还将持续下去）。 We have known each other since 2005. 我们从2005年认识的。 I have lived in Wuhan for several years.
辨析 have been to和 have gone to
have been to someplace. 曾经去过某地，已经回来． has gone to someplace.某人去了某地，还没有回来． My father has gone to Shanghai for a meeting. 他（已经）去了上海。 My father has been to Shanghai for a meeting. 他（曾经）去了上海。
C.过去分词，过去式与动词原形一样 cut—cut—cut put —put—put let—let—let read—read—read
现在完成时的标志词1 标志词：already(已经), yet(已经)
already: 常用于肯定句中. yet: 常用于否定句,疑问句尾.
I have already seen this film. 我已经看过这部电影了。 I haven’t seen this film yet. 我还没有看这部电影。 Have you seen this film yet? 你看过这部电影了没？
我在武汉住了好几年了。
现在完成时结构
肯定句：主语 + have/ has + 过去分词+...
I have finished my homework. 我已经完成作业了。
否定句:主语+haven’t ( have not) +过去分词… 主语+hasn’t ( has not ) +过去分词...
(窗户现在是坏的) (我现在没有钥匙) (不了解书的内容)
(手去开始并持续到现在的动作或状态。 She has learned English for 5 years. 她学英语已经五年了。 He has lived in Beijing since he was born . 从他出生那天起就住在北京。 Has he lived in Shenzhen for 4 years? 他住在深圳四年了吗？
现在完成时的标志词2
since: (自…以来) since+时间点 He has stayed here since 5 o’clock. since+ 时间段+ ago He has stayed here since 5 hours ago.
现在完成时的标志词2
since+ 从句 She has taught English since he came here. for: (长达）for+ 时间段 He has kept the book for 2 weeks.
过去分词的变化（规则）
一般动词，在词尾直接加“ ed ”。 work---worked---worked
以“ e ”结尾的动词，只在词尾加“ d ”。 live---lived---lived
以“辅音字母 + y ”结尾的动词，将 “y” 变为 “i”，再加“ ed ”。 study---studied---studied
用for 或since填空
1.Mr. Brown has had his TV _f_o_r___ 15 years.
2.I’ve taken driving lessons ___s_i_n_c_elast month. 3. My sister has had her cell phone ___f_o__ra month . 4. My friends haven’t visited me _s_i_n_c__emy birthday. 5. We haven’t used our car _f_o__r_ a long time . t 6. She hasn’t had a good cup of coffee f_o_r___years. 7. Tom has worn glassessi_n__c_e___he was 7 years old.
现在完成时的用法
表示过去发生的动作,强调结果或对现在的影 响。
Someone has broken the window. I have already lost the key. I haven’t read that book yet . I have just cleaned my hands.