新交通法规不仅减少了市中心的车流量，还让公共交通的使用率翻了一倍。
Not only did the new traffic law reduce downtown congestion, but also it doubled public transport usage.
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not英 /nɒt/|美 /nɑt/
only英 /ˈəʊnli/|美 /ˈoʊnli/
did英 /dɪd/|美 /dɪd/
but英 /bʌt/|美 /bʌt/
also英 /ˈɔːlsəʊ/|美 /ˈɔlsoʊ/
解释
句首 Not only 触发倒装，did 提前至主语 the new traffic law 之前；reduce 用原形；but also 引出递进信息 it doubled...。
Not only did the new traffic law reduce downtown congestion, but also it doubled public transport usage.
句首 Not only 触发倒装，did 提前至主语 the new traffic law 之前；reduce 用原形；but also 引出递进信息 it doubled...。