3、ng"构成。(V-ing表示在动词后面加上ing) 现在进行时常用以下几种情况: 1.当句子中有now时,常表示动作正在进行,这时要用现在进行时。 如:They are playing basketball now.现在他们正在打篮球。 2.以look, listen开头的句子,提示我们动作正在进行,这时要用现在进行时。如: Listen!She is singing an English song.听,她正在唱英语歌。3.肯定句式:主语 + be( am, is, are)+ V-ing +其它。①I am doing my homework. ②
4、 He is washing his clothes. ③ You are flying a kite. 4.否定句式:主语 + be(am, is, are) +not + V-ing +其它. ① I am not doing my homework. ② He is not washing his clothes. ③ You are not flying a kite. 5.一般疑问句:Be(am, is, are) + 主语 + V-ing +其它? ① Are you doing your homework? ② Is he
5、washing his clothes? ③ Am I flying a kite? 练习:1。Theboy__________________(draw)apicturenow。2。Listen。Somegirls_______________(sing)intheclassroom。3。Mymother_________________(cook)somenicefoodnow。4。What_____you______(do)now?5。Look。They_______________(have)anEnglishlesson。6.She_________