about English grammar ,例句"three years ago " 中的ago是修饰three years

What are the meaning of these words?third-party-singularThese words appear in an English Gramma book.About the Linking Verbs...it serves as a non-human third-party-singular subject including a natural phenomenon... I never English grammar （对“never”提问） ____ ____ do you study English gramma. Another thing that he found very difficult was English gramma.（改为同义句）____ _____ another thing that the found very difficult?(怎么填?为什么?) book about love (english) 英语作文about english english presentation about shopping what about p_____speaking english? How about my English books? How about ()English?怎么填 What about your English teacher? About study English,you could ... English debate about cumpus love 请英语大师帮我修改一段话I am always lack of a chance of speaking English practise,so I know my ability of speaking English can be improved up to a satisfying level because speaking is also based on gramma and words.I am always lack of a c it's about english food对english food提问 rememer you can learning english,not about english什么意思 New Concept English 3 Lesson 24--Gramma ProblemWe often read in novels how a seemingly respectable person or family has some terrible secret which has been concealed from strangers for years.---为什么secret是单数?He said with a smile as if he w i know less about japanese than about english 应该是什么? the english club writepaper about food