why didn't I think before I began to work?这是什么句子?why didn't什么语法?可以改写成why I didn't think before I began to work?

Why Didn't I Think of That? She wants to know ____ a good ideaA、why didn't I think it wasB、why I didn’t think it wasC、why I thought it wasn’tD、why did I think it wasn’t求理由、、、、、 Why didn't I think of that before?这里的助动词为何用didn't,而不用don't. why didn't I think before I began to work?这是什么句子?why didn't什么语法?可以改写成why I didn't think before I began to work? I didn't think they were ugly和Why would I think it's ugly 为什么一个用were一个用 is?I didn't think they were ugly.Why would I think it's ugly? Why didn't I think of that?是什么电视节目的标题? 单项选择,从每小题A、B、C、D中选出一个能填入句中空白处的最佳答案.（请说明选择理由）1.She would like to know _________.A.why didn’t I think it was a good idea B.why I didn’t think it was a good ideaC.why I thou Why didn't you ask me the question?Here's_____(单选）Why didn't you ask me the question?Here's_____.A.what I think B.what do I think C.what did I think D.what I thought —Why didn’t you attend the lecture yesterday?—I didn’t think that we _______ on Sundays.A.should B.ought to have C.shouldn’t have .will have to 帮我解析下, I didn’t eat I wasn’t hungry.(a) why (b) though(c) because(d) although why didn't I see that? Why go?I didn't hold you? meimei asked me 什么 go to her house A why wasn't B why didn't C why i didn't Do you think I didn't!翻译 my friend Tom asked me angrily _to him in the past three yearsA why I didn't write B why didn't I write C why hadn't I writtenD why I hadn't written 17．She wanted to know ______.A.Why didn’t I think it was a good ideaB.Why I didn’t think it was a good ideaC.Why I thought it wasn’t a good ideaD.Why did I think it wasn’t a good idea 为什么选A Why didn't you do your homework yesterday?But A:I did do it B:I didn't forget C:I didn' do it'顺便翻译句子意思. She wanted to know why I didn't think it was a good idea.其中的was为什么不变原型