fall into + drop into 既分別~

fall into 係指件物件跌咗入去一個地方, 唔係刻意去咁做. 好似:

When he opened the door and left his car, his keys and coins accidentally came out from his pocket and fell into the drainage (佢開門落車時, D碎銀同鎖匙咁啱喺褲袋飛咗出嚟, 跌咗入去水渠入面).

drop into 係指有人係刻意將一樣嘢放入去一個地方:

The postman dropped the letter into the mailbox (郵差將信放入郵箱)

fall into = become
e.g. I fell into a doze 我進入打瞌睡狀態

drop into = visit
e.g. I dropped into a supermarket on my way home 回家的途中我走進一間超級市場


Understand ?

Examples with "drop" from Cambridge Dictionary:

She dropped her keys. (Not on purpose)
I'm always dropping things. (Not on purpose)
Amanda dropped her sunglasses in/into the fountain. (Not on purpose)
The book dropped from/off the shelf. (Not on purpose)
Don't drop it!/Don't let it drop! (On purpose or By accident)

The above examples are self-explanatory, which shows the act of dropping can be either out of intention or by accident .


On the other hand, the verb "fall" is to emphasize the accidental nature.

Definition of "fall" from Cambridge dicitonary
to suddenly go down onto the ground or towards the ground without intending to or by accident

Example: He fell to his death climbing the mountain.

2010-04-10 03:26:46 補充：
"fall into" vs "drop into"

eg1. The farmers are trying to save a bull which fell into the sewer.

eg2. A coin dropped into the hole.

2010-04-10 04:24:03 補充：
In the above examples, "fell into" and "dropped into" are of similar meaning.

2010-04-10 04:29:39 補充：
eg3.She dropped a $10 coin into the beggar's collection plate.

eg4.She fell a $10 coin into the beggar's collection plate.


For the above examples, only eg3 is correct, because "fall" is an intransitive verb.

2010-04-10 04:56:48 補充：
eg5. The goalkeeper dropped (on purpose) to his knees to make a nice save.

eg6.The tripped goalkeeper fell (accidentally) on the lawn.

2010-04-11 03:24:28 補充：
More examples:

eg7. That actress fell / dropped into (偶然養成) the bad habit of taking drugs.

eg8. I want to drop into (臨時加入) college courses, to be a drop-in.

2010-04-11 05:24:18 補充：
For eg7, both "fell into" and "dropped into" can be used correctly in this sentence. The slight difference is that "fell into" has strongly highlighted its accidental nature.


For eg8, only "drop into" can be used here because it is an idiomatic expression.