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课文详注 Further notes on the text
1．make up our minds,打定主意。
make up one"s mind是表示下定决心的一个固定使用方法。
2．Will you travel by sea or by air?你们乘船去，还是乘飞机去？
这是一个选择疑问句。 by sea表示“乘船”。 by air表示“乘飞机”。
3． take a long time,花很长时间。
语法 Grammar in use
情态助动词may表示可能性
may或might全部表示“可能”、“可能”。通常既能够用may，也能够用might，不过might所表示的可能性要比may小，且当情况是虚拟的时只能用might而不能用may。
1may 表示现在或未来的可能性：may+动词原形：
The bread may be fresh.
面包可能是新鲜的。
He may be reading.
她可能正在看书。
I may go abroad.
我可能出国。
They may offer me a job.
她们可能会给我提供一份工作。
2may 也可表示过去的可能性，过去式为：may have(done):
He was late. He may have been busy.
她迟到了。她可能一直很忙。
I went out last night, and she may have been reading.
我昨天晚上出去了，她可能一直在看书。
It may have been right.
也可能是正确。
Thry may have been in the garden.
她们可能那时一直在花园里。
词汇学****Word study
1．worry v.
1担忧；发愁：
Mum always worries too much and it makes her tired.
母亲总是过分忧虑，而这使她疲惫。
She"s worried that she might lose her job soon.
她担心可能很快她就会丢掉她现在的工作。
2困扰；使不安宁：
Doesn"t it worry you that his health is becoming worse?
她的身体越来越差，你不担心吗？
She is alway worrying him for presents.
她总是缠着她要礼品。
2．look after
1照料，照料，照管：
Who"s going to look after the garden when we are away?
我们离开时谁来照料花园呢？
Sally will help us to lo