it is the first/second.time that+现在完成时

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itisthefirst/second.timethat+现在完成时itisthefirst/second.timethat+现在完成时itisthefirst/second.timethat+现在完

it is the first/second.time that+现在完成时
it is the first/second.time that+现在完成时

it is the first/second.time that+现在完成时
这是一个固定结构,意思是:这是我第一次/第二次做……事情
比如:It is the first time that I have been to Beijing.
这是我第一次来北京.