New Words：

swing [swɪŋ] n. 秋千; v.(使)摆动，摇摆，摇荡
swung [swʌŋ] swing的过去分词和过去式

Sample Sentences：

He sat on the bench, swinging his legs.
As he pushed her, she swung higher and higher.
Together the two girls play on the swing and swing all day.

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