文档介绍：时间介词“大本营”HappyCampbeginsat8::表示具体的时刻,钟点,on:表示具体某一天或具体某一天的早上,下午或晚上onSaturdayatsixo’clockatmidnightatthattimeonasunnymorningonthemoringofOctober10th---WhendidtheearthquakeinLushanhappen?---Ithappened______8:02______themorningofApril20,:表示在某段时间in2014in21centuriesinAprilinthemorning/afternoon/evening-----Wow!tenstudentsinourclasswillcelebratetheirfourteenth’..,ontimeintimeAttheageof4,KImijoinedtheTVshowthatiscalled“Dad,whereareyougoing?”.Remembertofinishyourhomeworkintime,,你才可以准时收看这个电视节目。Kimi在4岁的时候参加”爸爸去哪儿“的节目。For+一段时间since“自从….”pere(主持人)in“HappyCamp”for16yearsalready/since1998..Wedidn’tknowhimuntilthe“BigBangTheory”wasbroadcasted(播出)..until:直到…才直到《生活大爆炸》在中国播出,我们才开始知道他。Hedidn’tcomebackuntilyesterday.