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- I think I must do it; this may be the main chance. 我认为我非做不可,这可能是大好机会。
- I think I must do it; this may be my main chance. 我认为我非做不可，这可能是我的大好机会。
- I think I must do it; this may be my main chance 我认为我非做不可,这可能是我的大好机会
- I decided to systemise it really, because one of the things is to warm-up and I think as I get older and older I must do it better. 我决定将他们真正地系统化，其中一件事情就是要进行热身运动，而且我也很清楚随着我的年龄越来越大，我必须做得更好。
- I think I must tell you the full of it. 我想我应该把全部情况告诉你。
- If you do it,I think I'll follow you. 如果你干，我想我会跟着干。
- I said I wouldn't do it, but on second thought I think I will. 我说我不会做此事，但再细想一下我想我是会做的。
- I think I can do it neater than you could. 我想我能比你们做得爽利些。
- I think I may have found a way to do it. 我想我也许已找到一种办法。
- If you do it, I think I'll follow suit. 如果你去干的话,我想我会跟着做的。
- I think I must tire her dreadfully. 我想我一定很惹她讨厌。
- I think I can do it myself if I can borrow your trolley. 旅客:要是能借用一下你们的行李车，我想我自己就行。
- I think I must have caught this cold from you. 我的感冒想必是你传染的。
- I have lost my watch; I think I must buy one. 我丢了表，我想我必须再买一只。
- I think I must have dialled the wrong number. 我想我一定是打错电话了。
- I think I must tell you(that) what he said is not true. 我想我必须告诉您他所说的并不正确。
- I think I must tell you (that) what he said is not true. 我想我必须告诉您他所说的并不正确。
- I daren't have done it yesterday, but I think I dare now. 我昨天不敢做此事，但我想我现在敢做了。
- This nail won't go in,I think I must have hit a brick. 这颗钉子钉不进去，我想肯定是遇上了砖头。
- Now that I know how to do it,I think I'll go to China and make a living there. 现在，我既然知道怎么理了，我看我还是到中国去谋生得了。
