have grown so tall that I scarcely recognize you.你長成這么高，我?guī)缀跽J不出你來了。Did you recognize your uncle at once? 你是不是一下子就認出你的叔叔來了？Presently I recognized that we were in the Atlantic Avenue. 現(xiàn)在我知道我們在亞特蘭大大街。
    5、keep up, keep up with
    keep up既可是動副型短語動詞，也可是動介型短語動詞，主要表示“（斗志，價格等）不低落”，“維持，繼續(xù)”等意?？梢杂糜诒粍诱Z態(tài)。例如：Their spirit kept up well in spite of hardships.雖有困難，但他們并不氣餒。Prices still keep up.物價仍舊上漲。I hope the weather will keep up.我希望天氣繼續(xù)晴朗。They entered into a correspondence which was kept up for almost 10 years. 他們開始通信了，并且把這種通信聯(lián)系保持了十年之久。
    keep up with是一個動副介型短語動詞，后須接名詞做其賓語，表示“跟上，與...同步前進”的意思，即有強調(diào)并行不悖，不掉隊的意味。只用于主動語態(tài)。例如：He walked so fast that I could hardly kept up with him.他走得那么快，我簡直跟不上了。We must keep up with the times. 我們應該跟上時代。
    6、knock down, knock out
    這兩個短語動詞是動副型，knock既可作及物動詞用，也可作不及物動詞用。兩個短語動詞均在句中作謂語，只是意義不同。1. knock down主要表示下列幾種意義：1.擊倒，* 2.拍賣給 3.拆卸，拆散 4.（強迫）減價。例如：He was knocked down by a lorry.他