Becarefulofthetraffic_____thebusystreet.
A,whileyoucrossedB,whilecrossingC,whencrossD,ifcross
这前面是祈使句?后面这个部分是个句子还是用什么呢?
麻烦分析四个选项之差异
答:B
译:过车水马龙的街道时,一定要小心交通.
析:是个祈使句=Youshouldbe...
后面的成分有两种说法:
1.状语从句省略主+Be=whileyouarecrossingthebusystreet.
2.分词短语语作状语,为明确关系,在前面加上连词when,while,if,etc.
Crossingthebusystreet,becarefulofthetraffic.
可理解为条件,也可以理解为时间.
加个While,则明确为时间:whilecrossingthebusystreet,becarefulofthetraffic.