3、成时态的用法，并能在实际中灵活运用。Teachingmethods:Task-basedmethodTeachingtools:multimediacomputerblackboardTeachingprocedureStep 1 Warm-up 1.Greetings. 2.Talk about Robinson Crusoe by some conversations. Step 2 Grammar Focus 1.Read the sentences in the chart, try to understa
4、nd the language points. 现在完成时的用法： ①表示过去发生或已经完成的某一动作对现在造成的影响或结果e.g. –Have you had your lunch yet?–Yes, I have. I’ve just had it. (现在我不饿了.) ②表示动作或状态从过去某一时刻开始，一直延续到现在，而且可能还要继续下去。e.g. I haven’t seen her these days. I’ve known Bob for three years.I’ve been at this
5、school for over two years. 时间状语：already, yet, just, ever, never, before already和yet都可以作为现在完成时的标志词，但它们的用法不同。◆already一般用于肯定句中。如：We have already cleaned up our classroom. 注意：already用于疑问句中时通常表示惊奇。如： Have you finished your homework already? I can’t believe it.◆yet一
6、般用于疑问句和否定句中。如：Have you seen her yet? The bus hasn’t come yet.2.Find out the similar sentences in section A.总结现在完成时的结构。 现在完成时是由:助动词have / has+ 动词的过去分词构成：①肯定句：主语+ have / has + 过去分词(+ 其他) ②否定句：主语+ have / has + not + 过去分词(+ 其他) ③一般疑问句：have/ has + 主语+ 过去分词(+ 其他) ④特
7、殊疑问句：1）特殊疑问词(不是句子主语) + have / has + 主语+过去分词(+ 其他) 2) 特殊疑问词(是句子主语)+have / has+过去分词(+ 其他) 3.找出section A 中出现的过去分词，并列出其原形，过去式。 动词的过去式的变化和过去分词的变化并不完全相同。规则变化：1）一般在动词词尾直接加ed。如：pick→picked→picked; wish→wished→wished; stay→stayed→stayed 2）以不发音的e结尾的动词后面加d。如：like →like
