互動封閉仿真課堂
1、智能交互 2、電子板書式視頻教學(xué) 3、在線互動問答 4、封閉課堂啟發(fā)式教學(xué)方式
隨堂測試、知識梳理、易錯點揭示、總結(jié)啟迪智能錯題本
聽課中的錯題能自動加入錯題本,課后可方便復(fù)習(xí)及導(dǎo)出錯題本升級服務(wù)
在線答疑、課后同類題練習(xí)、講義下載、短信提醒3.be on fire著火,表狀態(tài)。如:
Look out! The pan is on fire.
catch fire 表動作
eg: The house caught fire last night.
on the fire指的是爐火
eg: The pan was on the fire.
4.現(xiàn)在分詞作狀語表示伴隨情況。句中有兩個以上的動作,除主要動作用謂語動詞表示外,另一個伴隨動作均可用現(xiàn)在分詞來表達。如:
The next moment the first wave swept her down, swallowing the garden.
Before they reached the house, a new great wave came, sweeping down trees, and sweeping them down too.
I sat at the gate, waiting for my mum.