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When I passed the school, I saw her dancing. 當(dāng)我走過學(xué)校時(shí)，看見她正在跳舞。　　

When I passed the school, I found [learned] she was about to dance.  當(dāng)我走過學(xué)校時(shí)，看見他正要跳舞。　　

When I got to the airport, I found [learned] the plane was about to take off. 當(dāng)我們到達(dá)機(jī)場(chǎng)時(shí)，看到飛機(jī)正要起飛。　　

When I got to the airport, I found [learned] the plane had taken off.  當(dāng)我們到達(dá)機(jī)場(chǎng)時(shí)，看到飛機(jī)已經(jīng)起飛了。

When I got to the airport, I saw the plane  taking off.  當(dāng)我們到達(dá)機(jī)場(chǎng)時(shí)，看到飛機(jī)正在起飛。