來源:網(wǎng)絡(luò)資源 2023-02-18 18:52:06
1.表示說話時(shí)正在進(jìn)行的動作
常和now連用,有時(shí)和動詞如look,listen等連用,表示“現(xiàn)在”這一概念:
Listen! Birds are singing.
聽!鳥在歌唱。
Look! he train is just getting into the station.
看!火車進(jìn)站啦。
He is reading now.
他在看書。
The river is flowing fast after last night's rain.
昨夜下雨后,河水流速很快。
The house is being painted.
房子正在上油漆。
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