英语复习知识点概要masses of和manage masses of… 该词组意为“大量的”，与lots of 相同，后接可数名词或不可数名词。如：They saved masses of money by improving technology. a mass of…意为“一大堆……”，“一大片……”。 “情态动词may/might +完成时”的结构，有以下用法： ①may/might + have + 过去分词表示推测过去某动作“可能”发生了。如： I can’t find my sunglasses, I may/might have left them at the restaurant yesterday. 一般来说，may和might两者意思上没什么区别，只是may比might表示的可能性大些。如： He may have heard of it from Jack. He might have heard of it from Jack. 在下列情况下，may和might 用法有区别： 句子的主要动词是现在时，间接引语中用may/might; 高中英语单词表3500词必背 英语单词记忆法 高中英语课本 句子的主要动词是过去时，间接引语中只用might.如： He says that she may/might have misunderstood him. He said that she might have misunderstood him. ②might + have + 过去分词，表示对本来可能发生而实际并未发生的动作的感叹或遗憾含有“责备”、“抱怨”之意，而may + 完成时无此含义。如： You might have told us earlier. This medicine might have cured your cough 比较：be sure of sth. /be sure that……确信…… be sure to do sth .一定……，必然…… be sure of doing sth.对做某事有把握  如： I’m sure of his success. = I’m sure that he’ll succeed.我确信他会成功。 He is sure to succeed .他一定会成功的。（说话人的判断） He is sure of succeeding in the exam.他对考试成功是有把握的。 注意：It’s certain that he’ll win.此时不能用It’s sure that …… make…to one’s own measure“依照某人的尺寸做……”如： This coat is made to you own measure,I’m sure it will fit you nicely.这件大衣是你订做的，我想肯定很合身。 to当介词用，“依照、按照”如： She is dancing to the music.她在随音乐节拍跳舞。 make up 编（造）；构成；化妆make up 组成，构成。还有“化妆、打扮；编造（故事等），弥补” 之意The government is made up of ten members. She made up a story to avoid being examined. It’s a lie. He made up the story.这是谎言，都是他编造出来的。 Ten doctors made up a medical team.十名医生组成了一支医疗队。 Although she doesn’t make up, she looks beautiful.尽管不化妆，她依然美丽。 manage    vt.经营；设法；对付 She managed the house very well.她把家管理得很好。 We managed to finish the work ahead of time. 我们设法提前完成了任务。 I shan’t be able to manage without help. 没有人帮助，我无法办到。 [辨析] manage to do sth. /try to do sth. manage to do sth.强调已达到目的或出现了结果，含“成功”之意。try to do sth.意为“试图或尽力做某事”，多表示一种企图或决心，而不表示一定成功。如： we’ve managed to make up for the lost time. 我们设法把失去的时间补了回来。 He tried to pass the examination,but failed. 他努力想通过考试，但没成功。