For example, when you use the verb need in a sentence, you can use an infinitive clause after need, as in the first sentence below, but you will never use a finite clause as in the second sentence.

When you look up a verb in the dictionary you find the infinitive form.‎ In English it’s made up of two words: to swim. ‎ But in French it’s just one, nager. ‎ And if you want to say ...