1） 大部分形容詞加-ly可構(gòu)成副詞。但 friendly，deadly，lovely，lonely，likely，lively，　　ugly，brotherly，仍為形容詞。
　改錯：(錯） she sang lovely.
　　　 （錯） he spoke to me very friendly.
　　　 （對） her singing was lovely.
　　　 （對） he spoke to me in a very friendly way.

2）有些以-ly 結(jié)尾既為形容詞，也為副詞。
　　 daily，weekly，monthly，yearly，early
　　 the times is a daily paper.
　　 the times is published daily.