从was/the first time【过去时标志】可以看出是过去时,所以用left。
while后常接ing例如:The phone was ringing while i was talking with mom.
惯用语搭配,很好记,例如:i love you very much. i very love you.
be familiar witn 对......很熟悉
动词不定式作后置定语,主语是i所以be动词用is
face是动词,应用副词修饰
这句话是被动形式,be+V过去分词表被动
fun不可数名词
have a good time 意为有一段好时光
face是名词,前面应加形容词性物主代词your
不懂欢迎再问,谢谢,请采纳