up they jump,down they fall这是什么语法?什么情况下这样用?

up they jump,down they fall这是什么语法?什么情况下这样用? 在什么情况下用will they什么情况下用shall they? jump up and down When they walking into the hall,they fall asleep.这句话从语法上看对吗 they什么情况下写成所有格形式 翻译they build you up so they can tear down Today they fall down and are next to it. 帮忙翻译下英语啊,下面一题填写p开头的单词 Monkeys are p____.They always jump up Do they jump drive they a to office the building car连词成句 see fall jump is 他们感冒了用英文怎么说?They have a headache 还是They have headaches什么情况下用 when i lay down they stand up,and when i stand up they lay d