the only long period of time during it the whole family coul

1、the only long period of time during it the whole family could be together once a year is the Spring Festival.这句话的主语是the only long period of time
during which引导的是一个定语从句the whole family could be together once a year,which 是一个引导词
2、副词可以直接用.my parents were always busy
是一个系表结构,be是一个系动词
3、动词需要变成分词形式才能充当主语.
4、we should concentrate on ours.是tell的宾语从句,引导词用that,如果跟在tell之后可以省略,但前面有一个and为了避免歧义,that不能省略.

1.which 可引导定语从句,原句是这样子的吗??
2.不用加WAS ,WERE AWAYS BUSY 是BE BUSY DOING 的用法
3 that 引导的是宾语从句,从句中 working hard 是主语,
4and在这里引导两个句子,与前面的working hard ……共同做told 的宾语，that不能省，所以就有了and that……
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