Different helping verbs are used for different purposes in sentences. One of their main functions is to situate the action of a sentence in a particular aspect of time. The two main aspects that helping verbs play a role in are the progressive aspect and the perfect aspect.
Baastrup syndrome is characterized as the of abnormal contact or rubbing between adjacent spinous processes. 0 Baastrup Syndrome patients report severe fatigue (0%). 2  1 Baastrup Syndrome patients report moderate fatigue (100%). 3  0 Baastrup Syndrome patients report mild fatigue (0%). 4  0 Baastrup Syndrome patients report no fatigue (0%).
CreutzfeldtâJakob disease (CJD) is a rapidly progressive, uniformly fatal, transmissible spongiform encephalopathy (TSE) characterized by the accumulation of an abnormal isoform (PrPSc) of the host encoded cellular prion protein (PrPC) in the brain (Kretzschmar et al., 1996 and Masters et al., 1979).