- The package was delivered at my doorstep yesterday.
- Was delivered the package at my doorstep yesterday.
- The package at my doorstep was delivered yesterday.
- At my doorstep was delivered the package yesterday.
The correct sentence structure in English is Subject-Verb-Place-Time. The subject (the package) should be followed by the verb (was delivered), the place (at my doorstep), and finally, the time (yesterday). The correct option (a) follows this structure.
