语言点：
1.shadow作动词主要有两层含义，一是跟踪盯梢，还可以引申为跟随某人学习，二是投下阴影。
表跟踪：He was shadowed for a week by the secret police.
shadow表示跟踪
表跟着学习：It's often helpful for teachers to shadow managers in industry.
常见用法-job shadowing
表投下阴影：A wide-brimmed hat shadowed her face.
2.sleep on it 还不确定，要想一想再决定
例句：I'm not sure yet, I need to sleep on it.
sleep on it
sleep like a log睡得很熟（像木头一样）
sleep like a log
3.trap in the past 沉湎于过去
还可以用dwell on，表示花了没必要的时间来沉浸在某事。
例如：So you made a mistake,but there's no need to dwell on it.
Don't dwell on the past,let's move on.
小鸡汤
4.clear 放晴 The fog was cleared
The coast is cleared.危险解除，可以行动了。
早上Eric举了熊孩子的例子，下面这个图也能很好的解释使用这个表达的语境。
熊狗子
5.out-and-out=through and through
be through with it 完成某事，等于finish it
例如服务生要收你还没吃完的盘子，可以这么说：I'm not through with this yet.
be through with sth
6.shoot/reach for the stars 伸手摘星，引申为表示野心很大
LOL
star作动词表示在影视剧中出演：xx stars in the movie/the movie stars xx领衔主演
7.could use xx 需要什么
I could use some help/directions 我需要帮助/方向
could use some help
The story could use some work 情节还有很大进步空间
someone could use some company 可以来陪陪某人
could use some company
8.suggest 推荐和建议
作推荐时可以用suggest someone to do sth
作建议时不能说suggest someone to do sth，也不能直接跟人，不能说He suggests parents that they should…，而要用He suggests to parents that they should…
最后分享个油管视频，详细解释了suggest的用法。
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