assign sb to do
表目的应该用to do,而不是for doing
句意是白宫任命了这个R,所以named是谓语动词 assign sb. sth. assign sb. to sth./to do sth.
assigned for doing错误 应该是assign sb. to do sth
for doing是错的
assign sb to do
assign sb to do sth
assign sb to do something 没有assign for doing sth
assign并没有for doing的用法
assign for结构错误 assign sth, assign sb sth, assign sth to sb, assign sb to (do) sth
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