151. If Dr. Wade was right, any apparent connection of the eating of highly processed foods and excelling at sports is purely coincidental.
If Dr. Wade was right, any apparent connection of the eating of
Should Dr. Wade be right, any apparent connection of eating
If Dr. Wade is right, any connection that is apparent between eating of
If Dr. Wade is right, any apparent connection between eating (D)
Should Dr. Wade have been right, any connection apparent between eating
D, the best choice, deals successfully with four issues. It uses a present indicative verb form in the conditional clause. If Dr. Wade is right, in order to agree with the verb in the main clause, any connection is...coincidental. It uses the idiomatic phrasing connection between x and y. It presents the coordinate objects of the preposition between (eating ... and excelling ...) in parallel form. Finally, the adjective apparent appears in front of its headnoun connection, not after. A, B, and E use incorrect verb forms in the conditional clause. A and B use the unidiomatic connection of x and y. A and C violate parallelism with eating of. C and E incorrectly place apparent after its headword connection.
75. If the proposed expenditures for gathering information abroad are reduced even further, international news reports have been and will continue to diminish in number and quality.
have been and will continue to diminish
have and will continue to diminish
will continue to diminish, as they already did,
will continue to diminish, as they have already,
will continue to diminish (E)
Choices A and B fail because the logic of the sentence demands that the verb in the main clause be wholly in the future tense: if x happens, y will happen. To compound the problem, the auxiliary verbs have been in A and have in B cannot properly be completed by to diminish. C, D, and E supply the correct verb form, but C and D conclude with faulty as clauses that are awkward and unnecessary, because will continue describes an action begun in the past. E is the best choice
从以上例子来看, 如果IF X happens, Y will happen 是不一定的了.
IF X HAPPENS, Y HAPPENS. 这样也是可以的.
第一题的意思是 什么如果是对的(一个对现在的condition),那么什么什么会发生(也是现在的一个事情会发生)
第二题是 在什么什么的情况下(对未来的一个条件的设置),未来的什么什么会发生
if 条件句中用了一般现在时,主句可以用现在的时态或者将来时
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