He was busy doing his homework,only (stopping)once in a while to have a short rest为什么括号里是stopping呢?还有这是什么句型,并列句?PS：stopping在这是充当表语吗 说明HE?

it was very late,but he was still busy doing his homework的同义句是什么( )it was very late ,he was still busy doing his homework. he was busy的复数 找错He is busy.He has no time doing housework. he was busy的复数形式(速度) He was busy yesterday一般疑问句 He was busy yesterday.改为一般疑问句 He was busy ___ (do)his homework while I was cooking这道题为什么要用非谓语中的动名词形式doing呢? I was busy doing cleaning 这句英语对吗 改错 what do you think is he busy doing He was busy working throughout the night.He was busy working __________ ________ _________. He started his own ____when he was only eighteen.(busy) he was so busy that he forgot washing his chothes he is always busy___ (work)是用be busy doing sth还是 be busy with sth Mark Twain was an American writer.One day he went to a city by train.He wanted to see one of his friends there.He was a very busy man.He usually forgot something.When he was in the train,the conductor asked him for his ticket.Mark Twain looked for hi he was very busy in the factory .he was very hungry when he got home. He was always busy with his work.的翻译 He was busy doing his homework,only (stopping)once in a while to have a short rest为什么括号里是stopping呢?还有这是什么句型,并列句?PS：stopping在这是充当表语吗 说明HE? 同义句转换：He is busy doing the housswork.He＿ ＿ ＿the housework