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“现在完成时，have\/has+过去分词.比如I have loved you 3000 times.爱过又怎样？现在呢？ “定语从句，跟屁虫语法。记住口诀，看见名词带保镖，which\/that\/who来放哨。比如the idol who has a 8-pack abs is my老公.（who追着名词idol跑）。” “遇见人用who，遇见物用which，that是个墙头草，男女通吃但要命，前提是不能用逗号时才能用。例如my math teacher , who wears the same shirt every monday, which makes us怀疑他买了七件同款...逗号后必须用which。” “非谓语动词：...