主从复合句定语从句(AttributiveClause)名词性从句(NounClause)状语从句(AdverbialClause)主从复合句主从复合句::关系代词:关系副词:that(主、宾、表;可指人或物)which(主、宾、表、定;只指物)who(主、宾;只指人)whom(宾;只指人)whose(定;可指人或物)as(主、宾、表)but(主、宾)when(时间状语)where(地点状语)why(原因状语)定语从句(AttributiveClause)as的用法:1
引导非限制性定语从句,其先行词多为整个主句;as位置比较灵活,可位于主句前或主句后,还可以插入主句中
)Asweallknow(=__________________),smokingdoesharmtohealth
=Smokingdoesharmtohealth,asweallknow
=Smoking,asweallknow,doesharmtohealth
=___isknowntoall____smokingdoesharmtohealth
AsisknowntoallItthat2
若先行词前有___________________作修饰语,通常用as作关系代词
)Lasttermourmathsteachersetsodifficultanexaminationproblem______noneofusworkedout
Lasttermourmathsteachersetsodifficultanexamproblem______noneofusworkeditout
YoushouldgivethewatchtoLily
Thiswatchisthesame_______shelostyesterday
I’mgoingtobuythesamewatch____hebought