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對(duì)于平穩(wěn)的趨勢(shì)的描述:

1.可以使用的動(dòng)詞或動(dòng)詞詞組:

to hardly change

to have little change

to keep steady

to level off

to remain constant

to stay the same

2.表示程度的副詞:

a.程度較大:

considerably

dramatically

greatly

markedly

obviously

quickly

rapidly

sharply

significantly

suddenly

3.程度較小:

slightly

gradually

slowly

Steadily

時(shí)間的嵌入

1.嵌入時(shí)間時(shí)所使用的介詞和介詞詞組:

in

from....to.....

between.....and..

during......and.....

at the beginning?of......

by the end of......

over......

at the end of.......

throughout......

2.時(shí)間 's +具體數(shù)據(jù)

上升和 下降趨勢(shì)的組合描述(嵌入了時(shí)間和程度之后);

先上升后下降的句型:

.... increased slowly during..... and ....but fell sharply in......

A steady fall in ..... during .... and ..... followed the sharp increase in ......

先下降后，上升的句型:

......fell before......began to make a recovery ....

......continue the recovery, climbing to......

......dropped during......but increased again in......

......fell and then pick up during......

......collapsed before rising to .... the end of......

起伏波動(dòng)的句型:

......fluctuated sharply all through......

波動(dòng)不大的句型:

......hardly changed through the period between .....and.......