副词abruptly

副词gradually

1. I suddenly remembered that I hadn''t locked the door.
    我突然记起我没有锁门。

1. 突然地：我忘不了(forget),我也考虑(consider)了,我也认可(recognize)了,但我从来没有后悔(regret)过我所做的一切. 在这天余下的时间里,他不是突然地(suddenly),静静地(quietly),轻微地(slightly),而是紧紧地(tightly)握着妈妈的手.

2. 瞬然：12. Dancin' 共舞 | 13. Suddenly 瞬然 | 14. Not Gonna Give In To It 永不言弃

3. 剎那间：Oh, I believe in yesterday噢,我相信昨日 | Suddenly剎那间 | I'm not half man I used be我已不是往日的我

1. 突然地;出乎意料地
    If something happens suddenly, it happens quickly and unexpectedly.

    e.g. Suddenly, she looked ten years older...
           突然间她看起来老了 10 岁。
    e.g. Her expression suddenly altered...
           她的表情一下子变了。

1. quickly and without warning

    e.g. he stopped suddenly

    Synonym: abruptlyshortdead

2. happening unexpectedly

    e.g. suddenly she felt a sharp pain in her side

    Synonym: all of a suddenof a sudden

3. on impulse
    without premeditation

    e.g. he decided to go to Chicago on the spur of the moment
           he made up his mind suddenly

    Synonym: on the spur of the moment