看到at the moment用什么时态?

看到at the moment用什么时态? at the moment , at that moment ,at present各用什么时态? at the moment 时态 at the moment 用于什么时态 at the moment和 in a moment 用于什么时态 at the moment等于now吗用在什么时态 the moment用在什么时态 for a moment 和for the moment呢 at the moment是什么时态 at that moment ；at this moment ；at this time ；at that time分别用什么时态? The teacher with her students ( )(plant) trees on the hill at the moment.括号中填什么?另外,at the moment 用什么时态? moment 的后面结什么时态,比如at the moment I______(type)the letter 为什么看到at the moment 动词却用现在进行时态?不应该用过去式吗?(☆_☆) at the moment多用于什么时态?Tom and Jim_____(do) their homework at the moment.这里应该用现在进行时还是过去进行时? at the moment用什么时态,还有just now 等等等等像这种词组用什么时态,希望一个一个写出来加上时态. 关于at the moment的时态at the moment 可不可以用现在进行时和过去进行时?/ at that time at this time at the time at this moment at the moment at that moment辨析（如：...at that time at this time at the time at this moment at the moment at that moment辨析（如：由于什么时态） I can not come now.At the moment I______(type) a letter.为什么填这个?at that moment用哪个时态?at this moment呢? at once right now right away at the moment 区别、比如用在哪个时态 at the moment一般用于什么时态?这样一道题：His uncle__(enter) the park on the bike at the moment.