We saw in the qui / que section that you can't end a sentence with a propostion.'The man who I was talking about' becomes 'The man about whom I was talking' or in French 'L'homme dont je parlais'Que followed by a sentence ending in de became dont. But what about que followed by a sentence ending in another proposition? For example: The table I was sitting on The man I work with The firm I work for This is where lequel etc are used. LequelYou cannot end a sentence with a preposition so you need to move it. If the thing you are talking about is a person, then you just use the preposition followed by qui. For example: The man I work for L'homme pour qui je travaille The girl I talked to La fille à qui j'ai parlé The boy I got a card from Le garç on de qui j'ai reç u une carte The blokes I play football with Les types avec qui je joue au foot Unfortunately you can only use qui in this structure with people. For inanimate items you have to use lequel etc. For example: The company I work for la socié té pour laquelle je travaille The tree I was sitting under L'arbre sous lequel j'é tais assis The books I couldn't work without Les livres sans lesquels je ne pourrais pas travailler Remember the word you use depends on the items' gender and number: singular plural masculine lequel lesquels feminine laquelle lesquelles Auquel / duquelWe saw that you can have propositions followed by lequel etc. e. g. avec lequel, pour lequel etc. However what about à lequel? Or de lequel? Normally é + le = au and à + les = aux therefore à + lequel = auquel; à + lesquels = auxquels and à + lesquelles = auxquelles Similarly de + le = du and de + les = des therefore de + lequel = duquel de + lesquels = desquels de + lesquelles = desquelles This is summarised below: à + lequel etc. masculine feminine singular auquel à laquelle plural auxquels auxquelles de + lequel etc. masculine feminine singular duquel de laquelle plural desquels desquelles Note: If the de is the result of a verb then use dont. For example: Le stylo que j'ai besoin de Le stylo dont j'ai besoin. If the de is the result of a preposition, then use de + laquelle etc. For example: La ville que la maison se trouve au centre de... à la ville au centre de laquelle la maison se trouve... Try the following exercise, click on the gap and type in the missing conjunctive./**/