他看起来不高兴 His doesn't look happy ; He looks happy ; He does not look happy ; He looks unhappy

他们看起来很高兴 They look very happy ; they are look very happy ; They seemed very pleased

他们看起来都很兴奋 They all look very excited ; They seem very excited

他看起来很兴奋 He looks very excited ; He seems very excited

他看起来很高兴 He looked very happy ; He seemed very pleased

他看起来有点兴奋 He looks a little excited