麻烦老师分析一下这个句子
1 how a rattlesnake injects its toxin using its fangs是做动词describes的宾语
2 and a male platypus delivers its toxin using spurs on its ankles是和前面并列做宾语吗?但是为什么后面不使用how来引导呢?
3 两个现在分词短语都是作状语吗?using its fangs / using spurs on its ankles
To give examples, the author describes how a rattlesnake injects its toxin using its fangs, and a male platypus delivers its toxin using spurs on its ankles.