“I know the words, but I cannot build a sentence” is rarely only a vocabulary problem. German distributes information differently from English, especially around the verb. Once you learn to see the sentence frame, long sentences become easier to navigate.
In a normal statement, the conjugated verb occupies the second grammatical position—not necessarily the second word.
The first element can be the subject, a time phrase or another focused element. The verb remains in the second position, and the subject follows when it is not first.
Perfect forms, modal constructions and separable verbs place one verbal element near the beginning and another near the end.
Read the opening and closing verb parts as a frame. The information between them belongs inside that frame rather than being random material.
With conjunctions such as weil and dass, the conjugated verb normally appears at the end of the subordinate clause.
Mark the conjunction first, then search for the closing verb. This is more reliable than translating every word from left to right before understanding the structure.
Repeated analysis of real sentences eventually turns the rule into an expectation: you begin to anticipate where the missing verb part will appear.
Make the structure visible: LingoDecoder aligns German phrases with close meanings while preserving the source order, so the sentence frame remains visible.