kylo Wrote:1) usage of "had" is incorrect since the statement mentions only one past event (....lost $7.4 billion....) that happened in 1992. we require two past events to justify the usage of "had".
yes.
more precisely, if we're going to say "had lost", we need to name another subsequent event/circumstance that either (a) ended that trend or (b) was affected by that trend.
the key is that you don't use past perfect unless you have 2 past time markers, the earlier of which has a distinct
impact on, or relevance to, the later.
for instance:
i had already left home when my friend arrived at my door. --> past perfect for the first verb, because it has a bearing on the circumstances of the second one (i.e., my friend came over to find an empty apartment)
i went to the restaurant after i left home --> just use the simple past 'left' (not 'had left'), because this time my leaving home has no direct bearing on the circumstances under which i went to the restaurant.
if you're a native speaker of english, verb tense is one of the few areas in which your ear will be a reliable predictor. verb tense is, after all, saturated with meaning, and it's one of those things that we native speakers use almost flawlessly even as relatively small children.
if you're not a native speaker, then, not so much.
also, this is definitely not carte blanche to use your ear in general. on
most sentence correction issues - pronouns, modifiers, spread-out subject-verb agreement, and the like - your ear will be an absolutely horrible guide.