21.I'm grateful for…… 我对……特别感激.

　　?I'm grateful for your timely help.

　　非常感谢你及时的帮助. [timely adj.及时的]

　　22.I am planning to…… …我打算…….

　　?I am planning to travel around China. 我打算环游中国.

　　23.I am very pleased to have this opportunity to…… 我很高兴有机会…….

　　?I am very pleased to have this opportunity to stand here and give you a speech.

　　我很高兴有机会站在这里为你们演讲.

　　24.I apologize for…… 我为……道歉.

　　?I apologize for leaving you alone. 很抱歉把你一个人留下.

　　25.I believe （that）…… …我相信…….

　　?I believe that we can conquer cancer totally some day.

　　我相信我们总有一天能够完全战胜癌症.

　　26.I believe we should…… 我认为我们应该…….

　　?I believe we should work together to protect our environment.

　　我认为我们应该携手保护环境.

　　27.I can't stand it when…… 我无法忍受…….

　　?I can't stand it when people talk with their mouth full.

　　我无法忍受别人说话的时候满嘴食物.

　　28.I didn't mean to…… 我不是有意…….

　　?I didn't mean to offend you.

　　我不是有意要冒犯你的. [offend n.冒犯;得罪]

　　29.I （don't） feel like…… 我（不）想…….

　　?I feel like going rock climbing with you this weekend.

　　这周末我想和你一起去攀岩.

　　?I really don't feel like going to the movies tonight.

　　我今晚真的不想去看电影.

　　30.I don't think it is necessary to…… 我认为没有必要…….

　　?I don't think it is necessary to leave so early.我认为没有必要这么早走.