I did find和I found有什么区别

I did find和I found有什么区别 I did notice...在用法上和 I noticed ...有什么区别?其他动词同问 比如 I did find 和 I found... i did not find 和i do not found 这两种表达过去的方式有什么不同?这两个句子都对吗? .---Well,I found this.I think it must be yours.---Where_____it.A.had you found B.did you find So difficult __ it to work out the problem that I decided to ask Tom for advice.A.I did find B.did I find C.I have found D.have I found finally I find it 和finally I found it哪个正确?finally I find it 和finally I found it哪个正确? ___you___ your watch?No,___.A Did；find out；I___you___ your watch?No,___.A Did；find out；I didn'tB Have；found；not yetC Have；looked for；I haven'tD Did；find；not yet neither did i 和 either did i 有什么区别 ()my english book?I can't find ti anywhere.( ) my english book?I can't find ti anywhere.I ( ) it on the dese just now为什么选DC did you see ,found D have you senn ,found So difficult it to work out the problem that i dicided to ask Tom for advice.A I did findB din i find C i have found D have i found not until ( ) stayed together for a couple of weeks ( ) we had a lot in common.A.we had,did I...not until ( ) stayed together for a couple of weeks ( ) we had a lot in common.A.we had,did I find B.had we,I found C.we had,I found D.had we,did I find not until ( ) stayed together for a couple of weeks ( ) we had a lot in common.A.we had,did I ...not until ( ) stayed together for a couple of weeks ( ) we had a lot in common.A.we had,did I find B.had we,I found C.we had,I found D.had we,did I find I have found it worth living 和 i found it worth living 有什么区别. find it hard 和find it hardly那个对?原句是这样的：l found it （hard）.at last ,I found it in the kitchen. i find you in the end i found you in the end有没有语法错误?这样表达对吗? where did you find my pen?______was in the book on your deskthat i found ita.there b.this c.that d.it 原因~ I hope you can find ...和I hope that you can find ...有什么区别? Just now I my coat somewhere.But now I it at the playground A.drop find B.dropped findC.dropped found D.drop found 回答者请说出原因,在I和my之间,在I和it之间填.