题目

—Mr. Ling，I have some difficulty ________ the article.—Remember ________ it three or four times at least.A. to understand；readingB. understanding；readingC. understanding；to readD. to understand；to read 答案：【答案】C【解析】句意：——李先生，我理解这篇文章有些困难。——记住至少读三到四遍。考查动词形式辨析题。have some difficulty（problem）doing sth.是固定表达，其中的have表示“有”而非使役动词。have+宾语+不定式结构中，不定式是作定语（或状语），此处不合句意，可排除AD两项。remember doing sth.记—Have you sent for a doctor, dear? —Oh! I ________ all about it. A．have forgotten B．had forgotten C．forget D．forgot