No matter what your fifth-grade English teacher says, some grammar "rules" no longer apply. The style mavens of our day all agree that the ability to communicate clearly and concisely takes precedence over archaic grammar rules. Stop chewing your pencils and forget about these rules. Each rule is followed by a grammatically correct sentence.

1. Never split an infinitive.
I want to carefully consider all of the options presented to me.

Following this rule all of the time will make your prose unnecessarily academic and stuffy. When in doubt, don't split the infinitive. But if splitting the infinitive conveys your meaning more clearly and concisely, split away.

2. Active verbs are always better than passive verbs.
Jerry was robbed. (The active alternative: Somebody robbed Jerry.)

Generally, active verbs are better. In the following cases, however, passive tense works just fine.
*When you don