I can tell he is quite ill by the feel of his forehead.一摸他的前额,我就知道他病得不轻。He shouldn't be working when he's so ill - he looks like death warmed up!他那么不舒服就不应该上班——看样子他病得不轻!He looks dreadfully ill.他看上去病得不轻。You should make allowances for him - he's been quite ill recently.你应该体谅他——他最近一直病得不轻。