There is no such simple method as you suppose could exist. You have to realize one thing, which I think a careful appreciation of this TLFi page will make clear to you, the preposition "de" is saturted with a plentiful ...
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aimer/aimer à/aimer de
Associations EditorsLa première l’est (archaïque); la seconde est littéraire: on peut l’utiliser dans du langage formel de narration.
What is correct? “durée du séjour” vs. “durée de séjour”
Associations EditorsIf it refers to a specific stay/visit you should use “durée du séjour” as du is the combination of a preposition (de) and a definite article (le). Nous serons à votre disposition pendant toute la durée du séjour. If you ...
Je fais de mon mieux: what is the ‘de’?
Business EditorsThis is an idiomatic turn in which the preposition can’t be analyzed semantically in too accurate a manner. Its meaning is comparable to that in "faire des pieds et des mains", for instance (roughly, "avec"). (TLFi) 4. La modalité est ...
`De` after a verb should be put before an uncountable noun?
Business EditorsIn general use : Your understanding is correct. Take care with some nouns that are, in particular, strictly countable, but can convey some uncountable general meaning : With currencies for instance : Currencies are strictly countable, and, in a bank, ...
Using “de” vs an adjective
Business EditorsGood question @Honza Pokorny. As often with French language, it depends on each case 
“salle de bains” is a word in itself. It means “bathroom”, no less, no more. “chapeau rouge” is different, there are two distinct words: “chapeau” ...
“Pas classe” or “pas de classe”?
Associations EditorsThe verb “avoir” can take a direct complement which is a noun without an article to indicate that some scheduled activity takes place. This can work both with “il y a” (“there is”) and with a subject (who the person ...
would “sacs de magasin” be incorrect?
Business EditorsYes, this person was (arguably) implicitly refering to this very store‘s bags. It’s quite safe to assume he/she cares far less about the number of other bags you used, since you couldn’t be charged for them (hopefully!)… There are a ...
Le rôle de « de » dans « une heure de libre »
Associations Editorsces “de” connotent de niveaux de langue familières. ils ne sont pas nécessaires à la compréhension mais marquent une forme plus décontractée. on peut se passer du “de” dans la première phrase pour lui donner un ton plus formel. “il ...
When is “voir” followed by “de”?
Business EditorsThis is unrelated to the verb voir. Inconvénient is indefinite. The indefinite article un becomes de when following a negation: Tu vois un petit roux là-bas ? Non, je ne vois pas de petit roux. Tu vas voir un médecin ...