do the foreigners who speak English pay less attention to grammar? in other words,as an English learner,don't i need to pay much attention to grammar when i talk with foreigners as long as they can understand what i talk?

what're meanings of "goin' ","lookin' ","notin' "and such like these?and how to ues them? actually,i know what their meaning.i just don't understand their signs.how to use these in usual

how to pronounce "一"and"二"in Japanese?ps:they are not the numbers.i can't type Japanese. they just appear in sentences.for example: ヴォーヴォナグル (the third one) and それでコンピュータに兴味を持ちソフトエンジニアーになりました(the 22th one).actually,i just a beginner,these sentences are copied from internet.

日语中的“一”“二”怎么发音？PS：不是一二三的“一二”

Whether lots of words are speaked with no stress so that we can speak English quickly?