四、 dare, need
3) dare和 need作实义动词用时, 有人称、时态和数的变化。 在肯定句中,dare后面常接带to的不定式。在疑问句和否 认句中,dare后面可接带to或不带to的不定式。而need后 面只能接带to的不定式。
1. I dare to swim across this river.
----Can it be our teacher? 那个人有可能是我们老师吗?
----No, it can’t be our teacher. He is on a visit to the Great Wall. 不可能。咱们老师正在游览长城精呢品P。PT
例 --- I think Miss Gao must be in the library. She said she would go there. ----- No. She __ be there, I have just been there. A.can’t B.mustn’t C.needn’t D.wouldn’t
精品PPT
六、 will, would
• 3) would表示过去反复发生的动作或某种倾向。would表 示过去习惯时比used to正式,且没有“现已无此习惯〞的 含义。
• 1. During the vacation, he would visit me every other day.
• 2. The wound would not heal.
• 4) 表示估计和猜测。
• It would be about ten o’clock when she left home.
精品PPT
七、should, ought to
1) should, ought to表示“应该〞,ought to表示义务或责任, 比should语气重。