he just sat there with his mouth open.为什么后面的open 不用非谓语动词呢?

he was sat there He sat there,thinking.对吗. he just sat there with his mouth open.为什么后面的open 不用非谓语动词呢? 英语翻译Buried in thought,he sat there. 3.He sat there.He said nothing.(同义句) He sat there ___ ___ _____. she just sat there,___in depressionA.sunken b.sinking 为什么? As she sailed away,I sat there just watching. 这个英语语法题怎样解释?He just sat there with his mouth __________.a.to open b.opening c.open d.opened我选b. he has just left there 意思 He sat there for a long time w___ doing anything T______the exam,he sat there without writing a single word. he sat there and didn't do everthing?找出错误 all the day he didnt do any homework.he just sat before the computer w______ time. 翻译啊 they just sat there looking at one another over the rims of their mugs He sat there,reading a newspaper.中的 there和reading a newspaper He has just been to there 错在哪里? Then he sat there and looked at it for three hours句中的and可以不要吗?Then he sat there looked at it for three hours He sat there without saying anything?He sat there without saying anything. anything在这里是副词还是名词,望指教