英语“ Mary writed a letter”中动词的词形变化有错误,正确形式应该采用是（ ）
下列语素中属于自由语素的是（ ）
下列词中全都由复合构词的方式构成的是（ ）
下列各组复合词中,构词方式相同的一组是（ ）
下列词语中,不属于偏义复合词的一项是（ ）
下列词中不含词缀的是（ ）
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3.2语法形式的主要手段
屈折即词的内部发生语音的交替变化。英语动词“ write”的过去时应用屈折形式“ wrote”。
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