答疑0423答疑检索：非限制性定语从句ThebrainisasactiveduringREM(rapideyemovement)sleep-whenmosyvividdreamsoccur-asitiswhenfullyawake,saysDr.EricNofzingerattheUniversityofPittsburgh.【句子结构分析】1.句子主干：ThebrainisasactiveduringREM(rapideyemovement)sleep2.定语从句：whenmosyvividdreamsoccur（修饰REMsleep）3.比较状语从句：asitiswhenfullyawake4.插入语：saysDr.EricNofzingerattheUniversityofPittsburgh【翻译】匹茨堡大学的艾瑞克诺夫辛格博士说：在大多数生动梦境发生的快速眼动周期，大脑是很活跃的，就像是它在完全清醒的时候一样。Mostpeopleseemtohavemorebaddreamsearlyinthenight,progressingtowardhappieronesbeforeawakening,suggestingthattheyareworkingthroughnegativefeelingsgeneratedduringtheday.【句子结构分析】1.句子主干：Mostpeopleseemtohavemorebaddreamsearlyinthenight2.分词结构作伴随状语：progressingtowardhappieronesbeforeawakening3.分词结构作状语：suggestingthattheyareworkingthroughnegativefeelingsgeneratedduringtheday4.宾语从句：thattheyareworkingthroughnegativefeelingsgeneratedduringtheday5.分词结构作后置定语：（negativefeelings）generatedduringtheday【翻译】大多数人似乎会在前半夜做更多恶梦，而这些恶梦会在醒来之前变成稍微快乐一点的梦，这就表明他们正在处理白天所产生的的消极情绪。【难点分析】非限制性定语从句属于定语从句，是修饰名词或者代词的从句，通常放在被修饰词的后面，本质上相当于形容词的作用。被修饰的名词或者代词叫做先行词。非限制性定语从句是先行词的附加说明，去掉也不会影响主句的意思，它与主句常常用逗号分开。例如：Mywife,whoisoutatthemoment,willphoneyouwhenshegetsback.
