bili_44483038407:老师,问个问题?第九题
Readling the first sentence of each paragraph before you read the whole text helps you get the main idea quickly,这个是主句和时间状语 的复合句,现在分词reading做状语,before 后面是主句,you 是主语,read是谓语,the whole text 是宾语,为什么后面是helps you get the main idea quickly??help 是动词,宾语后面是宾补,如用动词应该是现在分词和不定式做宾补,为什么不用helping 或者to help 呢?