写出下列动词的第三人称单数和现在分词形式.
go
do
spell
know
teach
meet
like
come
run
throw
give
play
study
open
close
catch
fly
watch
get
help
參考答案:单三：goes does spelles knows teaches meets likes comes runs throwes gives plays studies opens closes catches flies watches gets helps
现在分词：going doing spelling knowing teaching meeting coming runing throwing giving playing studing opening closing catching flying watching getting helping
