I saw a UFO _____on center street at 10 o'clock last night.(

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I saw a UFO _____on center street at 10 o'clock last night.(land)
在这里应该用see sb do 还是see sb doing 还是see(that)加从句?

see sb do 是看到动作的过程
see sb doing 是看到动作的部分,句子中有at 10 o'clock 这个时间状语,应该是用see sb doing
再问：那能不能用过去式？
再答：本句就是过去时的啊，只需要把see改saw就可以了呀
再问：我是说把land变为过去式
再答：不可以，只能用landing
再问：为什么？
再答： see sb doing里的doing表示的是原形+ing的意思

I saw a UFO _____on center street at 10 o'clock last night.( I saw a UFO_______(land) on Center Street at ten o'clock las When I walked past his office at 11 o'clock last night,I saw i heard someone saw a UFO last night I watched TV last night.(用 at eight o'clock last night 代替 la A man was killed at around 10 o’clock last night.Here are so 补全对话A:Where ____ you at 8 o'clock last night?B:Why?A:I ____ last night i saw him______( hang ) out in the street. I saw they were running down the street last night. I went to bed at 11 o'clock last night的同义句 I was (learning Einlish )at eight o’clock last night.对括号部分题为 I was still___(醒着的)at 11 o‘clock last night