What you're supposed to do is choose the experiments and activities that you want to do.
这句话的语法对吗？听写的时候在 choose 前加了个 to ，当时觉得应该是吞音吞掉了，可是对照文本再听，好像确实没有 to ，那样的话这个句子的语法没问题吗？
第1个回答 2009-02-16
这个句子没问题。
当不定式做表语时如果系动词前出现了助动词 do ，那么后面的不定式就可以省去to.
当不定式做表语时如果系动词前出现了助动词 do ，那么后面的不定式就可以省去to.
参考资料：
第2个回答 2009-02-16
我认为应该有to，在这个句子中to choose(或者choosing也可以)是真正的主语，用choose的话是不对的，动词原形不可作主语
第3个回答 2009-02-16
这是一个病句。应在choose前加to
第4个回答 2009-02-16
应该要to吧 不然就是 choosing了
第5个回答 2009-02-16
What you're supposed to do is (to) choose the experiments and activities that you want to do.
What you're supposed to do is (choosing) the experiments and activities that you want to do.本回答被提问者采纳
What you're supposed to do is (choosing) the experiments and activities that you want to do.本回答被提问者采纳
