本研究旨在探索中国非英语专业大学生短语动词学习的记忆模式，以及输入频率和语义透明度对短语动词学习的作用。
So it is necessary to investigate the lexical aspects and semantic properties of phrasal verbs in order to provide theoretical reference for the reformation and development of English teaching.
在这节写作课中我们将着重学习短语动词和以及一些可以分开的短语动词和不可以分开的短语动词。
In this writing lesson, we will focus on phrasal verbs and learn about phrasal verbs that we can separate and phrasal verbs that we cannot separate.
短语动词的组合力强，数量多，使用广，而语义和语法结构又纷繁复杂，一直是英语学习者不易把握的一个词类。
Therefore, learners find them vital for understanding. However, Verb-particle constructions are difficult and troublesome for learners to master because of its complexity of meanings and structures.
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