1.thanks very much for (invite)us to have dinner.
问题描述:
1.thanks very much for (invite)us to have dinner.
2.the wonderful piece of music is so difficult to (play)
3.who was (happy),you or your friend jim?
根据括号里里的提示,填入适当形式.请说明原因,
答
1.inviting(for是介词,后面要加doing形式)
2.play(to do不定式做目的状语)
3.happier(形容词比较级,you or your friend Jim是两者比较,要用比较级)