② have在疑问句及否定句中的位置一般与助动词相同 如:Has he(got )to go?他一定得走吗? 但有时也用do/did形式 如:Does he have to go?他一定得走吗? ③ be与带to的动词不定式连用 如:T...
2. 当由一般疑问句充当宾语从句时,用if或whether引导,意为“是否”。 (1) Is it an interesting novel? I don’t know. I don’t know if /whether it is an interesting. (2) Does Cathy go to school early? Do you know? Do you know if /whether Cathy goes to sc...
4) It’s a good idea for you to do… 5) You should (not) do…/ You had better (not) do… 6) Why not do…? 7) Remember to do…/ Don’t forget to do… 8) I hope these suggest...
对于used to这个短语,相信很多童鞋的第一反应都是“过去常常”,但其实used to do 是“过去常常”,那be used to doing呢?看着差不多,可意思却完全不一样。 Used to do sth used to do sth 表示“过去常常做某事”,现在已经不再做了 I used to cook, but I don't have t...
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