■3)动词+疑问词+to decide know, consider forget, learn, remember, show understand, see. wonder. hear. find out, explain tell Please show us how to do that.请演示给我们如何去做 here are so many kinds of tape-recorders on sale that/ can t make up my mind which to buy有这么多的录音机, 我都拿不定主意买哪一种 口注意疑问词带不定式在句中作成分时,谓语动词用单 数 a The question is how to put it into practice 问题是怎样把它付诸实施。◼ 3）动词+疑问词+ to ◼ decide, know, consider forget, learn, remember, show, understand, see, wonder, hear, find out, explain, tell ◼ Please show us how to do that. 请演示给我们如何去做。 ◼ There are so many kinds of tape-recorders on sale that I can‘t make up my mind which to buy.有这么多的录音机， 我都拿不定主意买哪一种。 ◼ 注意:疑问词带不定式在句中作成分时，谓语动词用单 数。 ◼ The question is how to put it into practice. 问题是怎样把它付诸实施