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1·To recognize and use adverbs of frequency.

识别并使用频率副词。

2·To revise the use of adverbs of frequency and the names of common food items.

复习常用频率副词和常用食物的名称。

3·Evidence from large corpora can investigate what kind of adverbs can be used in the Middle Construction and the frequency of their use in it.

借助大型语料库可以验证哪些副词能用于中动结构式，并通过频率分布发现其使用规律。

4·Learn to use of prepositions and correct to say time use frequency adverbs.

学会用介词to表示时间并正确使用频率副词。