Question

I think _______necessary that we should hold a meeting to discuss the problem. 选哪个，为什么选它？

Answer 1

does he tell us

以always,usually,now and then等频度副词位于句首，且表示强调时，用部分倒装;不强调则不用部分倒装。句中强调了a good command of English is important精通英语是重要的这部分内容，所以要用部分强调。还有不想要的情况，我写了个例句，你看一下。

eg:

Often he walks.他常常步行。

Often does my mum tell me that nothing is impossible with a willing heart.我妈常告诉我说有志者，事竟成。