第五单元grammar

单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,Grammar,省略,不定式符号to的省略,感官动词feel, smell see hear和使役动词let make have后接不带to的不定式作宾语外,但在被动语态中不省略,I saw him enter the room.,He was seen to enter the room.,2)在do nothing but do ,cant help but do,would rather do than do,prefer to do rather than do等句型中省略to,There is nothing I can do but wait.,1,不定式结构的省略,在特定的上下文里 为了避免重复作宾语,hope like try need 宾补,tell ask warn等之后的不定式短语再次出现时,to 后的内容 常承前省略 保留to,Nothing has ever stopped him from sleeping when he wants to sleep.,Do you want to have a cup of tea?,Yes, Id like to.,注意 若承前省略的不定式后是be 或助动词have,要保留be或have,China is no longer what she use to be.,Have you told tom about it.,Sorry but I should have.,2,虚拟语气中if的省略,Were it to rain, I would stay.,Should it rain,Had you got up earlier, you would have caught the bus.,定从中关系代词,that which whom当宾语,且前面没介词,定从中先行词为time/way时从句关系词可省,This is the first time I have been here.,3,not 与so指代省略,与think hope suppose imagine expect believe等连用代替否定的宾从 肯定的宾从,Do you think she s got married?,I expect so.,I expect not.,I dont expect so.,4,