The concert will be held as schedule unless there is a typhoon.= The concert will be held as schedule if there is not a typhoon.
6.be afraid to do sth. 害怕干某事
I’m afraid to speak in front of other people.
be afraid of sth. 害怕某事
He told me not to be afraid of difficulties.
be afraid +that从句
I’m afraid that I can’t finish on time
7. be angry with sb.
We were angry with him for keeping us waiting.
be angry at/about sth.
He is angry at/about your answer.
I was very angry at what he said.
8. in the end 最后；终于= at last/ finally
at the end of 在...末端；到...尽头
He married the nice girl in the end/at last/finally.
The school is at the end of the street.
9. careless adj.粗心的；反义词：careful，意为“小心的” 。
The boy is very careless. 这个男孩很粗心 。
He is more careful than me. 他比我认真 。
10. advise v.“劝告；建议”n. advice, 是不可数名词.
Give me some advice!
advise doing sth. 建议做某事 。
advise sb.（not）to do sth. 建议某人（不）做某事
I advise waiting till the right time. 我建议等到适当的时候 。
I advise him not to sleep late every day. 我建议他不要每天睡懒觉 。
11. It’s best (not) to do sth. 最好（不）做某事
It’s best to speak English every day.
12. run away from“ 从…逃离” “逃避”
13. cut …in half “切成两半”
【重点语法】
if条件句
if条件句：条件句用于陈述语气，表示假设的情况可能发生，其中if 是“如果”的意思，引导条件状语从句，if从句用一般现在时，主句则用一般将来时 。

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注意：在与if条件句连用的主句中我们一般用will 表示将来时，而不用be going to 表示将来时 。
PS：在when（当…时候）, after, before 等引导的时间状语从句中，如果主句为一般将来时，从句要用一般现在时表示将来（主将从现） 。
【take after takeupdoing什么意思】如： I will call you when I reach Canada. 我一到加拿大就给你打电话 。

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