The three constructions “als ob,” “als wenn,” and “als” function as subordinating conjunctions that are most often used with the general subjunctive (der Konjunktiv II). Typically, this means that the conjugated verb in the clause in which these conjunctions appear should be located at the end; however, in the case of “als,” the verb will come immediately after the conjunction.The most commonly used conjunction is “als ob,” though all three are seen commonly in the subjunctive. Here are some examples:
Daniel hat uns befohlen (commanded), als ob er unser Chef wäre.
Jutta spricht von der Zukunft, als wenn er schon wüsste, was passieren wird.
Vera gibt viel Geld aus, als wäre sie reich.
The conjunctions are underlined and the verbs are in bold print to make it clear the placement of the verbs in relation to the conjunctions. These conjunctions are more often found in the second half of a sentence in their subordinate clauses, but can also occur at the beginning of sentences.