New words：
ankle ['æŋkl] n.踝；踝关节
Sample Sentences：
She turned her ankle while ice-skating.
She stepped on a loose stone and twisted her ankle.
She broke her ankle weeks ago and it's still in plaster.
loose [lu:s] adj. 松的；宽松的；未固定牢的；可分开的
New words：
sparrow ['spærəu] n. 麻雀
Sample Sentences：
The boy has got a hen sparrow.
The sparrow is a common bird in our city.
I can see a sparrow flying in the distance.
New words：
twister ['twistər] n.旋风；龙卷风；难题
brain twister 脑筋急转弯；智力难题
Sample Sentences：
That's a real twister.
The girl is very good at the brain twister game.
The National Weather Service says at least 50 twisters were reported.
Pick three to five tongue twisters every day and practice them a few times.
New words：
twist [twist]
v.捻；拧；扭转；曲折；扭动
n.捻；拧；扭动；搓；曲折处
brain twisters
Sample Sentences：
He fell and twisted his ankle.
She twisted the long scarf round her head.
The newspapers twisted everything I said.
I twisted round in my seat to speak to her.
The mountain road is full of twists.
She gave the lid another twist and it came off.
ankle ['æŋkl] n.踝；踝关节
New words：
whiz [wiz] = whizz
n.飕飕声；能手；奇才
v.飕飕作声；使飕飕作声
whizzed whiz和whizz的过去分词和过去式
Sample Sentences：
He is a whiz at football.
A bullet whizzed past my ear.
The train whizzed past the station.
The sparrow whizzed up into a tree.
sparrow ['spærəu] n. 麻雀