8. I don't think his answer is right.
I can't believe she is right.
You don't think they will come tomorrow,do you?
think,believe,suppose等接宾语从句，表示否定时要否定主句。变为反意疑问句时，若主语是第一人称，简短问句与宾语从句的主谓语保持一致，若主句主语是其他人称，与主句主谓语保持一致。例句①变为反意疑问句应为：I can't believe she is right,is she?
①She is such a good teacher that we all love her.
②It was such a hot day that they didn't go out for a walk as usual.
(1)“such+a(an)+形容词+名词+that...”，可以改写成“so+形容词+a(an)+名词+that...”，例句①可以改写成：She is so good a teacher that we all love her.
①There are so many people in the room that I can't get in.
②The man has so much money that he can buy a car.
10. there be...;either... or...;neither... nor...;not only... but also...
①There is a pen and two pencils in his pencil-box. 他的铅笔盒里有一支钢笔和两支铅笔。
②Not only you but also I want to go travelling. 不但你，我也想去旅游。
③Either you or I am leaving for Shanghai. 要么你去上海，要么我去上海。
④Neither you nor he is right. 你和他都不对。
⑤Both Jack and Tim are English. Jack和Tim都是英国人。
当这几个句型连接主语时，谓语动词的人称和数要遵循“就近原则”。对比both... and...来记忆，both... and...连接主语时视为复数。
11. enough+名词+to do... 有足够的……做某事；
形容词/副词+enough+to do... 足够……做某事。
①There is enough room to hold these people to have a meeting.
②The boy is strong enough to carry the heavy box.
enough作副词修饰形容词或副词时，放在所修饰词的后面，句子可以用so... that...句型改写。例句②可以改写为：The boy is so strong that he can carry the heavy box.
12. enjoy doing sth.喜欢(爱好)做某事；
like to do/like doing sth.喜欢做某事。
①Do you enjoy listening to music? 你喜欢听音乐吗?
②I like to swim in the swimming pool. 我喜欢在游泳池中游泳。(喜欢到某一具体的地方游泳)
③I like swimming. 我喜欢游泳。(只讲喜欢这项运动)