他只有基本的英语掌握能力。

He only has a ___basic command of English.

这场危机导致基本食品如肉类、奶酪和糖的价格上涨。

The crisis has led to price increases in ___basic foodstuffs, such as meat, cheese and sugar.

我已经有一个球拍和一些基本的打球知识。

I already have a racquet and some ___basic knowledge of how to play.