1、Unit2 Wilelife ProtectionDiscovering Useful Structures现在进行时1.表示现在进行的动作或存在的状态。2.表示现阶段正在进行或从事的动作。动词变化时间状语 可用来表示现在进行时的 时间状语,常用的有:now,this week,at the moment,right now 等;或者告诉你一个准确的现在时间,或者用look,listen(常用于句子的开头,表示提醒听者注意正在发生的事情)。例如:They are playing basketball now.现在,他们正在打篮球。Listen,She is singing an English
2、 song.听,她正在唱英文歌。Look at the picture.The children are flying kites in the park.看这幅图。那些孩子正在公园放风筝。We are making model planes these days.这些天我们在做飞机模型。Its 6:30 now.I am getting up.句型分析 1、一般疑问句是将be移到主语前面,句末加问号,读升调。be+主语+doing sth Are they putting up the scaffolding?Yes,they are./No,they arent.Is he showing
3、 a foreign guest round the city?Yes,he is./No,he isnt.2、否定句式是在be动词后加not。主语+be+not+doing sthI am not working.He isnt runnig or the track.The students arent playing football.案例分析 1、当句中出现的表示时间的词是now,at the moment,;(此刻、现在)等时,表示句子要说明的是现在正在发生的事,动词应用现在进行时。Lindas brother is watching TV in his bedroom now.现在
4、,琳达的哥哥正在他的卧室里看电视。Were far from home.What are our parents doing at the moment?现在,我们远离家了,我们的父母此刻在干什么呢?2、当句中出现的时间状语是these days,this week,this month,this term 等时,如果句子所要表达的意义是在这一阶段正在发生的事,则动词应用现在进行时。These days we are helping the farmers work on the farm.这些天我们在农场帮农民们干活。Theyre having a test this week.这一周,他们
5、在进行一次考试。Mr Cheng is visiting our village this month.这个月,程先生在我们村访问。3、在句中出现了Look,Listen,Cant you see?等暗示词时,说明后面谓语动词的动作正在发生,该动词应用现在进行时。Look!Maria and Tom are dancing under the tree.看!玛丽亚和汤姆正在树下跳舞。Listen!Our English teacher is singing the popular English song.听!我们英语老师正在唱那首流行的英文歌曲。4、注意根据上下文的暗示,句子的谓语动词可能应
6、用现在进行时。Where is Mr Wang?王先生在哪儿?Oh,he is reading a newspaper in the office.噢,他正在办公室看报。被动语态被动语态由“助动词be+及物动词的过去分词”构成,其时态变化只改变be的形式,过去分词部分不变be(am/is are 或者 was/were)+done(动词过去分词).现在进行时的被动语态构成:am/is/are+being+及物动词的过去分词Uncle Wang is mending my bike now.My bike is being repaired by Tom now.They are planting trees over there.Trees are being planted over there by them.Thank you