3. threaten vt. 威胁;恐吓
He threatened that he would make it public.
他威胁说要公开那件事。
The black clouds threatened rain.
乌云密布预示着将要下雨。
threaten to do sth. 威胁要做某事
The boss threatened to fire him.
老板威胁要开除他。
threat n. 恐吓,威胁;兆头;构成威胁之物(人)
Wild life is under threat everywhere.
野生生物到处受到 (灭绝的) 威胁。
There was a threat of typhoon.
有刮台风的征兆。
(
)1. Her brother _____ to leave her in the dark
room alone if she disobeyed his order.
A. declared
B. threatened
C. warned
D. exclaimed
2. 他的出现对我们的成功是一个威胁。
_____________________________________
B
His presence is a threat to our success.
4. rate
①n. 速度;比率;费用;等级
The rate of interest is 5 percent.
利率是5%。
That book is only second rate.
那本书只是二流作品。
at the rate of 以……的比率/速度
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