now 能和介词at连用吗?at now

来源：学生作业帮编辑：灵鹊做题网作业帮分类：英语作业时间：2024/04/29 01:49:07

now 能和介词at连用吗?at now
Mary was singing at this time yesterday.
表现现在有的有
at present
at this time
now
但是这句如果改成Mary was singing at now yesterday似乎就不通顺了的感觉.
好像Yesterday和Now是同样性质的,所以不能重复?但具体要怎么说我讲不清楚

不能,"now"确切表示“此时此刻的现在”,绝对不会出现在过去式.而且“now”其实是个副词,但是你会看到“What are you looking at now? “ ”Where are we at now?" ,不过,你知道意思不一样吧,不会感觉稀奇吧.

now 能和介词at连用吗?at now at once 和 right now 现在完成时可以和now连用吗介词能和副词连用吗?If it is necessary,you can call me at anytime.这个句子 at once ,right now,right away和now的区别 LOOK AT ME NOW at present=now? right now和at present分别是什么意思? right now 和 at once 的区别? at the moment 和now的区别 about 能和介词连用吗 at present、now、recently有什么区别,at present和recently一样吗?