she works on a boat改为否定句 never和sometimes的区别?

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she works on a boat改为否定句

never和sometimes的区别?

never和sometimes的区别?

never,从来不,表示完全否定。如I have never seen her.
sometimes 表示有时候,通常放在句首。如
Sometimes I go to school by bus,but,never by boat.

一般疑问句可以用肯定或否定回答反之?

用Yes 或者用No 回答的疑问句是一般疑问句。反之,那就可能是需要具体回答的特殊疑问句如:What is this 这是什么回答就是This is a …. 或者是提出两种或者两种以上的问题供选择的选择疑问句,如:Are you going by boat or by bus 你打算坐船还是乘公交车

off和out的区别?

OUT 的语气比较粗鲁
OFF 的语气比较平和,普通人都这么说
set off: 出发,侧重于去某个地方
例句与用法:
If you want to catch that train wed better set off for the station immediately.
你要是想赶上那班火车,咱们就最好马上动身去火车站。
Theyve set off on a journey round the world.
他们已经开始环游世界.
set out:
出发,开始,侧重于开始做某事,还有规划,展现的意思
例句与用法:
They succeeded in what they set out to do.
他们打算做的事已经做成了.
set about:
开始,着手,与set out意思相近,但set out后加不定式,即set out to do sth,而set about后加 ing形式,即set about doing sth.
例句与用法:
1. You must set about your work at once.
你必须立即开始工作。
2. Do you know how to set about going on this work
你知道怎样着手进行这项工作吗?