Prepositions in English - on time or in time?

source: English Teacher Jon     2012年2月7日
http://www.engvid.com Prepositions can be confusing. In this grammar lesson, I look at the difference between in time and on time. Sometimes we can use either one, and in other situations only one of the prepositions is correct. Can you tell the difference? Take the quiz at http://www.engvid.com/prepositions-in...

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