on second thought后面有没有s就是这样

on second thought后面有没有s就是这样 on a second look为什么有冠词 on second thought 为什么没有冠词 on second thought 这个词 second前面为什么不加冠词 But on the second thought请问句中的thought 为什么用过去式啊? she lives on the second floor.画住on the second floor 画线提问 怎么写答句前面有三个空,要填,后面是she live on? I didn't go to this party last night ,because（） I changed my minda on second thought b on the second thought 选哪个,为什么, If the thought I thought I thought had been the thought I thought为什么有两个I thought 在 the thought后面?.. I want to give up,but on second thoughts,I thought I must try once more! I didn't go to her birthday party yesterday evening ,because ___ I changed my mind .A.on a second thought B.by second thoughts C.on second thoughts D.on the second thoughts 解释下原因,谢. without a second thought是什么意思? he up his mind to give up the experiment but on second thought he determiedhe_____up his mind to give up the experiment but on second thought he determined to rty a third time中间填写had made 详解. second后面是什么? without a second thought什么意思 without a second thought什么意思 in the second floor 与 on the second floor有什么区别? on the second floor 与 at the second floor 有什么区别? 请问on the second floor 与 at the second floor 有什么区别? on the second