Split forms: In general, avoid awkward constructions that split infinitive form of a verb (to leave, to assist, etc.) or compound forms (had left, are found out, etc.). For example,
- Awkward: She was ordered to immediately leave on an assignment.
- Preferred: She was ordered to leave immediately on an assignment.
- Awkward: There stood the wagon that we had early autumn left by the barn.
- Preferred: There stood the wagon that we had left by the barn early last autumn.
Occasionally, however, a split is not awkward and is necessary to convey the meaning. For example,
- He wanted to really help his mother.
- Those who lie are often found out.
- How has your health been?
- The budget was tentatively approved.