tā / xiàng lái / bèn zuǐ bèn shé / suī rán / xīn lǐ / zháo jí / què / shuō bù chū huà lái

他向来笨嘴笨舌，虽然心里着急却说不出话来。

He has always been clumsy in speech; even when he is anxious, he can't get the words out.