Question

It sounds like something is wrong with the car’s engine. _______, we’d better take it to the garage immediately.

A．Otherwise

B．If not

C．but for that

D．If so

Answer 1

D

試題分析：Otherwise否則；If not不然的話；要不是；but for又不是；If so如果是這樣的話。句意：聽(tīng)起來(lái)汽車的發(fā)動(dòng)機(jī)有點(diǎn)問(wèn)題，如果是這樣的話，我們最好立即把它送到修理廠。
點(diǎn)評(píng)： so或not用于避免前面所說(shuō)的內(nèi)容。主從復(fù)合句中，主句有一些成份省略，或省略一個(gè)從句或從句的一部分，用so或not代替。(不可用it或that代替。)如：——“Is she going to see the film tomorrow?——I think so."——Are you feeling better today?"——“I'm afraid not."　這種用法常見(jiàn)的還有：“How so?" Why so?" Is that so?" I hope so." I suppose not." I believe not." I'm afraid so." I'm afraid not.”　I hope not." I guess not."