六年級英語語法知識點：現(xiàn)在進(jìn)行時

現(xiàn)在進(jìn)行時
    表示正在發(fā)生的事情或進(jìn)行的動作，常與now,listen,look等詞連用，結(jié)構(gòu)是主語+be動詞(am, is, are)+動詞ing.
    如：It is raining now.
    外面正在下雨
    It is six o’clock now.
    現(xiàn)在6點了
    My parents are reading newspapers in the sitting room.
    我父母正在客廳看報紙
    Look! The children are having a running race now.
    看!孩子們正在賽跑
    問句將be動詞移前，否定句在be動詞后+not.