初三英语知识点总结

初三英语知识点总结(一) Since 用来说明动作起始时间，for用来说明动作延续时间长度。例如：I have lived here for more than twenty years.我住在这儿二十多年了。I have lived here since I was born. 我从出生起就住在这儿了。注意：并非有for 作为时间状语的句子都用现在完成时。I worked here...