全國(guó)公共英語(yǔ)考試語(yǔ)法——不定式的時(shí)態(tài)和語(yǔ)態(tài)

時(shí)態(tài)\語(yǔ)態(tài)　　　 主動(dòng)　　　　　被動(dòng)
    一般式　　　　　 to do　　　　　　to be done
    進(jìn)行式　　　　　 to be doing
    完成式　　　　　 to have done　　 to have been done
    完成進(jìn)行式　　　 to have been doing
    1) 現(xiàn)在時(shí)：一般現(xiàn)在時(shí)表示的動(dòng)詞，有時(shí)與謂語(yǔ)動(dòng)詞表示的動(dòng)作同時(shí)發(fā)生，有時(shí)發(fā)生在謂語(yǔ)動(dòng)詞的動(dòng)作之后。
    He seems to know this.
    I hope to see you again. = I hope that I'll see you again.　我希望再見(jiàn)到你。
    2) 完成時(shí)：表示的動(dòng)作發(fā)生在謂語(yǔ)動(dòng)詞表示的動(dòng)作之前。
    I'm sorry to have given you so much trouble.
    He seems to have caught a cold.
    3) 進(jìn)行時(shí)： 表示動(dòng)作正在進(jìn)行，與謂語(yǔ)動(dòng)詞表示的動(dòng)作同時(shí)發(fā)生。
    He seems to be eating something.
    4) 完成進(jìn)行時(shí)：
    She is known to have been wreaking on the problem for many years