forwards、forth与onwards这些副词均含有“向前”之意。
forwards : 多指具体的向前移动。
- She leaned forwards to whisper something in my ear.
她倾身向前，对我耳语了一番。 - I always look forwards, not back.
我总是放眼未来，而不是回首过去。
forth : 正式的书面用词，侧重指向前行进。
- They set forth on their travels in early June.
他们6月初起程旅行。 - From that day forth he never drank again.
从那天起，他再也没有沾过酒。
onwards : 通常指向着一定的目标、终端或地方前进。
- I'm usually at home from five o'clock onwards.
我通常从5点钟起都在家。 - We sailed onwards in a westerly direction.
我们继续向西航行。
