6.I think the little boy will _____staying alone dark.A. frighten B. fear C. afraid D. worry

B. fear doing...害怕...

C和D明显不对,be afraid of 和 worry about

B

B

B fear在这里做动词
A的意思是使什么受惊吓，在这里不符
CD皆为形容词，须加介词后方可再接ing形式

B

1.frighten 含有主动含义,使...害怕
frighten: [ 'fraitn ]
v. 使惊吓,惊恐
词形变化:
副词:frighteningly 名词:frightener 动词过去式:frightened 过去分词:frightened 现在分词:frightening 第三人称单数:frightens
例句与用法:
1. He frightened the old man into giving him all the money.
他恐吓那位老人把所有的钱都给了他。
2. The little baby was frightened by the fierce dog. 那个小孩被恶狗吓坏了。
3. The children's shouts frightened off the birds.
孩子们的喊声把鸟儿吓飞了。
4. Sorry, I didn't mean to frighten you.
对不起, 我不是故意吓唬你的.
5. The child was frightened to death by the violent thunderstorm. 那孩子让狂风暴雨吓得要命.
6. You frightened the life out of me/frightened me out of my wits suddenly knocking on the window like that! 你突然那样敲窗户真把我的魂儿都吓掉了.
7. The alarm frightened the burglars away.
警铃声把贼吓跑了.