Enseignement de l'anglais/Conditionnel
Present Conditional : "Conditionnel Présent".
Voix Active.
Simple.
+ : affirmative
I/we should ...
he/she/it would ...
you/they would ...
? : interrogative
should I/we ... ?
would he/she/it ... ?
would you/they ... ?
- : négative
I/we should not ...
he/she/it would not ...
you/they would not ...
?/- : interro-négative
should I/we not ... ?
would he/she/it not ... ?
would you/they not ... ?
Progressif.
+ : affirmative
I/we should be ...ing
he/she/it would be ...ing
you/they would be ...ing
? : interrogative
should I/we be ...ing ?
would he/she/it be ...ing ?
would you/they be ...ing ?
- : négative
I/we should not be ...ing
he/she/it would not be ...ing
you/they would not be ...ing
?/- : interro-négative
should I/we not be ...ing ?
would he/she/it not be ...ing ?
would you/they not be ...ing ?
"(Conditionnel présent de : be)"
Voix Passive.
Simple.
+ : affirmative
I/we should be ...ed
he/she/it would be ...ed
you/they would be ...ed
? : interrogative
should I/we be ...ed ?
would he/she/it be ...ed ?
would you/they be ...ed ?
- : négative
I/we should not be ...ed
he/she/it would not be ...ed
you/they would not be ...ed
?/- : interro-négative
should I/we not be ...ed ?
would he/she/it not be ...ed ?
would you/they not be ...ed ?
Progressif.
+ : affirmative
I/we should be being ...ed
he/she/it would be being ...ed
you/they would be being ...ed
? : interrogative
should I/we be being ...ed ?
would he/she/it be being ...ed ?
would you/they be being ...ed ?
- : négative
I/we should not be being ...ed
he/she/it would not be being ...ed
you/they would not be being ...ed
?/- : interro-négative
should I/we not be being ...ed ?
would he/she/it not be being ...ed ?
would you/they not be being ...ed ?
Past Conditional : " Conditionnel Passé".
Voix Active.
Simple.
+ : affirmative
I/we should have ...ed
he/she/it would have ...ed
you/they would have ...ed
? : interrogative
should I/we have ...ed ?
would he/she/it have ...ed ?
would you/they have ...ed ?
- : négative
I/we should not have ...ed
he/she/it would not have ...ed
you/they would not have ...ed
?/- : interro-négative
should I/we not have ...ed ?
would he/she/it not have ...ed ?
would you/they not have ...ed ?
"(Conditionnel présent de : have)"
Progressif.
+ : affirmative
I/we should have been ...ing
he/she/it would have been ...ing
you/they would have been ...ing
? : interrogative
should I/we have been ...ing ?
would he/she/it have been ...ing ?
would you/they have been ...ing ?
- : négative
I/we should not have been ...ing
he/she/it would not have been ...ing
you/they would not have been ...ing
?/- : interro-négative
should I/we not have been ...ing ?
would he/she/it not have been ...ing ?
would you/they not have been ...ing ?
"(Conditionnel présent de : be)"
Voix Passive.
Simple.
+ : affirmative
I/we should have been ...ed
he/she/it would have been ...ed
you/they would have been ...ed
? : interrogative
should I/we have been ...ed ?
would he/she/it have been ...ed ?
would you/they have been ...ed ?
- : négative
I/we should not have been ...ed
he/she/it would not have been ...ed
you/they would not have been ...ed
?/- : interro-négative
should I/we not have been ...ed ?
would he/she/it not have been ...ed ?
would you/they not have been ...ed ?
Progressif.
+ : affirmative
I/we should have been being ...ed
he/she/it would have been being ...ed
you/they would have been being ...ed
? : interrogative
should I/we have been being ...ed ?
would he/she/it have been being ...ed ?
would you/they have been being ...ed ?
- : négative
I/we should not have been being ...ed
he/she/it would not have been being ...ed
you/they would not have been being ...ed
?/- : interro-négative
should I/we not have been being ...ed ?
would he/she/it not have been being ...ed ?
would you/they not have been being ...ed ?

Chimie organométallique
La chimie organométallique est l'étude des composés chimiques possédant des liasions chimiques entre un atome de carbone et un atome de métal. Souvent cette définition est trop stricte car beaucoup de composés sans de telles liaisons ont une réactivité chimique similaire. Une alternative appropriée à cette définition serait « composés contenant un élément-métal lié avec une liaison à caractère essentiellement covalente ». La chimie organométallique combine des aspects de la chimie inorganique et de la chimie organique. Les composés organométalliques sont distingués par le préfixe « organo- ». Les composés organopalladium sont un exemple de cette règle. Les composés organométalliques les plus usuels sont les organozinciques tels que ClZnCH2C(=O)OEt (chloro(éthoxycarbonylméthyl)zinc), les organocuprates tels que Li[CuMe2] (lithium diméthylcuprate), les organomagnésiens tels que le réactif de Grignard MeMgI (iodure de méthylmagnésium) et MgEt2 (diéthylmagnésium), et les organolithiums tels que le n-butyllithium.
Des classes importantes de composés organométalliques sont les carbonyles de métal, les complexes carbène-métal de transition, et les métallocènes avec le ferrocène comme premier exemple. Le « métal » est défini exprès dans un sens large dans ce contexte et peut inclure des éléments tels que le silicium, l'arsenic ou le bore, qui ne sont pas des métaux mais sont considérés être des métalloïdes, tels que l'organoborane Et3B (triéthylborane). Il existe aussi le groupe des métaux pauvres qui sont des éléments tels que l'aluminium qui fait partie du catalyseur Ziegler-Natta.
Les composés organométalliques sont souvent utilisés comme catalyseurs, par exemple pour la production de dérivés du pétrole et en particulier celle de polymères.
La règle des 18 électrons et le principe d'isolobal sont des concepts qui aident à comprendre la liaison chimique et la réactivité des composés organométalliques.