英语语法问题：下述句子（见补充说明）是什么从句?I had no idea what I was talking about.

英语语法问题：下述句子（见补充说明）是什么从句?I had no idea what I was talking about. 下述句子（见补充说明）中的cross是形容词还是副词?Tom sat on the ground,with hands cross.（汤姆双手交叉着,坐在地上.）注：要求严格地从语法角度讲 下述句子（见补充说明）中的那个downside怎么理解?There is downside,though,including cute nicknames like murses for male nurses. 下述句子（见补充说明）怎么理解?It is interesting to guess what colors meant to the first humans.尤其是里面的从句从语法角度较难翻译 一个英语语法问题：如下同位语从句（见补充说明）中的that能否省略?News came that our class had won the first prize. 下述构型的正确命名是:（图见问题补充）A. (1)R (2)R (3)S B.(1)R (2)S (3)S C.(1)S (2)S (3)S D.(1)R (2)R (3)R 问一个英语语法问题,详细内容见补充.句子是这样的Rumors,embroidered wiht detail,live on for years,neither denied nor confirmed,until they become accepted as fact even among people not known for their credulity.我想问问为什么 四级英语语法知识点 补充 说明 英语语法问题：下题（见补充说明）空格处应选A答案还是B答案?谢谢I have nothing to do but ____ computer.A. play B. to play 下述句子（见补充说明）中的should是什么用法?难道should也可以表“可能”之意吗?In the case of fine art,paintings,or jewelry,color photographs can sometimes be of assistance to the police should you be unfortunate enough to 问题补充说明 下述定语从句（见补充说明）中的of which可否用whose来代替?The Paris Opera House was a huge building,of which seven were below the ground. 英语语法句子成份分析,详见问题补充：A company is depending on you to do your part in protecting our company.其中to do your part in protecting our company是不定式做宾补吗? 英语语法 句子成份分析,详见问题补充.Which one would you choose to purchase first,second,and last?其中to purchase first,second,and last?是不定式做宾语补语吗? 回答补充说明的问题, 英语语法句子成分分析问题,详见问题补充.To what email address should this link?这应该是一个特殊疑问句,为什么 to提到句子的最前面? 请问句子在哪里停顿?（句子在问题补充说明中）They do no know that wasting time means wasting psrt of their own life. 英语语法中的句子结构是?