是take action do sth还是to do sth?

是take action do sth还是to do sth? take action to do sth 中action什么时候加s take action(s) to do sth和do sth to do sth take action to do sth中的acton为什么不是复数形式? 是take sth.to do sth.还是take sth.to doing sth. take sb do sth take an action还是take action是固定搭配 take sb.doing sth.还是take sb.to do sth.是固定搭配么 短语是under take do sth还是under take doing sth? take action和take actions to do sth.有什么不同吗?这两个词组应该都存在的,有什么不同吗? 采取措施是take action还是take actions? take sth to do sth是什么意思? take care not to do sth是固定短语吗 take time to do sth. take trouble to do sth. take action take action take action