Les connecteurs logiques avancés
Beyond mais, et, donc, parce que — French has a rich set of logical connectors that signal exactly what relation holds between two ideas: contrast, consequence, addition, concession. Mastering them is what separates intermediate from upper-intermediate writing and speech. Each connector carries a register (formal vs neutral vs casual) and a position rule (before the second clause, after the verb, between two sentences). Pick the wrong one and you sound stiff; pick the right one and your French clicks.
Contrast — cependant, néanmoins, toutefois, en revanche, par contre
These all express 'however / on the other hand', but with subtle differences. cependant = however (neutral, common in writing and speech). néanmoins = nonetheless (formal, written, slightly stronger concession). toutefois = however / nevertheless (formal/neutral, often interchangeable with cependant). en revanche = on the other hand (introduces a clean opposition between two parallel facts; formal/neutral). par contre = on the other hand (the casual/spoken cousin of en revanche; sometimes criticized in formal writing, but extremely common in speech). Position: usually at the start of a new sentence, or after the verb. Il est intelligent. Cependant, il est paresseux. Il aime le café. En revanche, il déteste le thé.
Consequence — par conséquent, ainsi, donc, c'est pourquoi, du coup
Going from cause to effect. par conséquent = consequently (formal, written). ainsi = thus (formal/neutral; often triggers inversion: Ainsi peut-on conclure que…). donc = so / therefore (neutral, the workhorse — usable everywhere). c'est pourquoi = that's why (neutral; introduces the conclusion that follows). du coup = so / as a result (very casual, ubiquitous in spoken French). Il pleut, par conséquent le match est annulé. Le train était en retard, du coup je suis arrivée à pied. Position: donc can sit after the verb (Je pense donc je suis.) or at the start; the others mostly start the clause.
Addition — de plus, en outre, par ailleurs, d'ailleurs
All translate roughly as 'moreover / besides', but with traps. de plus = moreover / in addition (neutral; the safest default). en outre = furthermore (formal/written). par ailleurs = furthermore / on another note (formal/neutral; introduces a parallel additional point). d'ailleurs is the trickiest: it does NOT mean 'on the other hand' (false friend with English 'on the other hand'!). It means 'in fact / besides / for that matter' and reinforces what was just said by giving a corroborating detail. Il est très occupé. D'ailleurs, il n'a pas répondu. = He's very busy. In fact, he didn't reply. Position: usually at the start of a sentence or clause, sometimes after the verb.
Cause / explanation — en effet, car, puisque, étant donné que
en effet = indeed / in fact (confirms what was just said with supporting evidence; NOT 'effectively'!). Il est fatigué. En effet, il a très peu dormi. car = for / because (slightly more formal than parce que, common in writing and careful speech; never starts a sentence in classical usage). puisque = since / given that (presents the cause as already known/accepted). Puisque tu es là, aide-moi. = Since you're here, help me. étant donné que = given that (formal). Don't confuse en effet (= 'indeed', confirms) with par conséquent (= 'as a result', concludes) — they go in opposite directions of the same chain.
Concession — bien que, quoique, malgré, en dépit de
These mark 'although / despite' relations. bien que + subjonctif = although. Bien qu'il soit fatigué, il travaille. quoique + subjonctif = although (slightly more literary, same syntax). malgré + noun = despite. Malgré la pluie, ils sont sortis. = Despite the rain, they went out. en dépit de + noun = in spite of (more formal version of malgré). Don't say malgré que in careful French — it's controversial; use bien que + subjonctif instead. (See lesson 28 for the subjonctif details.)
Register and position — three quick rules
(1) Register matters: in a formal email or essay, prefer par conséquent, néanmoins, en outre, en revanche. In casual speech, du coup, par contre, et puis are perfectly natural — and the fancy ones can sound pompous. (2) Most connectors live at the start of a sentence or clause, set off by a comma. A few (donc, cependant, toutefois) can also slot after the verb or auxiliary: Il est, cependant, très gentil. (3) Don't pile them up. Mais cependant is redundant. Donc par conséquent is redundant. One connector per logical step is enough.
Quick recap — pick the right tool
Contrast: neutral cependant; formal néanmoins, toutefois; parallel opposition en revanche / casual par contre. Consequence: formal par conséquent, ainsi; neutral donc, c'est pourquoi; casual du coup. Addition: neutral de plus; formal en outre, par ailleurs; reinforcing d'ailleurs ('in fact, what's more'). Cause/confirmation: en effet confirms ('indeed'); car explains ('for'); puisque treats the cause as known ('since'). Concession: bien que / quoique + subjunctive; malgré / en dépit de + noun.
