重点讲解：
1. I take it 我自认为；我以为；我猜测；
例句：I take it that neither of you reads 'The Times'.
我觉得你们俩都不读《泰晤士报》。
2. practice doing sth. 练习；训练；
例句：Mary is often listened to practice singing songs in the next room.
玛丽经常被听到在隔壁练习唱歌。
3. come up 即将发生；即将到来；
例句：We do have elections coming up.
我们的确将要进行选举。
4. be supposed to do sth. 应当，应该；认为；
例句：He was supposed to be an expert in this field.
人们认为他是这方面的一位专家。
