【时态问题】 measures must be taken now because time______.(run out) 详解.

【时态问题】 measures must be taken now because time______.(run out) 详解. must的时态问题!must有过去式么?怎麽有人说有又有人说没有?还有must能不能用于过去时态中啊? measures 英语句子翻译：People must take measures to protect the animals is danger.还有请教这句话中measures是什么意思? 帮忙找英语句子语法时态错误,It is must be fun that we enjoy the beautiful view强调句,动词时态好像有问题, must可以用在什么时态里 .初中英语的时态问题 ,有关时态的问题 we must take all possible measures __to improve working conditions 为什么选tending? we must take all possible measures tending to improve working conditions tending to 如何分析? we must take all possible measures tending to improve working conditions如何翻译 She must be sent (must sent) to the hospital时态时态转换是否正确？ 高考英语语法 China has taken resolute measures to safeguard its sovereighty over Diaoyu Dao.请问 的时态是什么 , 宾语从句的时态问题 怎样区别英语时态问题 英语翻译题求助,时态问题沉船事故发生后,地方官员一直在考虑应该采取什么措施来防止这各事故 After the shipwreck , the local officials are thinking what measures should be taken to prevent such kinds of accidents. The goverment must take measures to prevent the river____.A polluted B polluting C from polluted D being polluted. we must take some measures to prevent the environment being poll. 改为被动.速度,急.考试中.