142 有些单词，加个“ a” 你就不认识它啦！

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wait & await

sleep & asleep

wake & awake

究竟怎么用？ 

sleep&asleep

1. I'm sleeping now. /I didn't get enough sleep. 

2. The baby is asleep now! 

3. I fell asleep in class. 

wake&awake

1. I always wake up at 7. 

2. wake me up when september ends. 

3. He stayed awake. 

    I'll be awake at 8. 

    wide awake: 绝对清醒。

She awaits your call. 

i await his decision. 

 i‘ll wait. 

 I wait for him. 

We wait for an hour.