suggest /advise /request/ require辨析1. suggest 1) suggest sth. 建议某事 suggest doing sth. Can anyone suggest a method of dealing with pollution?有人能想个法子处置惩罚一下污染吗？Surely nobody would suggest turning him out of the house.固然不会有人建议把他从屋子里赶出去。2) suggest that +虚拟语气（should do）I suggest that you (should) think over your position very carefully.我建议你认真思量一下你的处境。

3) suggest sb/sb’s doing sth.I suggest Bob's giving up smoking.我建议鲍勃戒烟。2. advise1) advise doing sth. 建议做某事 advise sb.(not)to do sth. 建议某人（不）做某事【注意】advise后面不能接to do, 而是advise doing/sb. to do.【正】He advised leaving early. 他建议早点出发。

【正】He advised us to leave early. 他建议我们早点出发。对比【误】He advised to leave early.【正】We were advised to leave early. （被动语态）He advised taking action right away.他建议马上接纳行动。I advise you to have no truck with that man.我劝你别和谁人人打交道。2）advise that +虚拟语气（should do）We advised that he leave early.(注意 he leave 没有用he leaves, 因为should省略掉了 )3. request 1) request+n. 要求，请求I have to request permission if you want to take any photos here.如果你向在这里照相的话，需要申请批准。

2) request sb. to do 请求做某事 We requested him to leave the room as soon as possible.我们请求他快脱离。3) a/the request for sth. 对…的要求He refused all requests for an interview.他拒绝了所有采访请求。4) at one’s request 应某人的要求 at the request of 凭据...的要求Roger attended the meeting at the request of the manager/ at manager's request.罗杰根据司理的要求出席了集会。

5) request that +虚拟语气（should do） I requested that he should leave.4.require 需要，需求1) require to do和require doing 的区别require to do 要求做 require doing = require to be done 需要做2) require sb. to do sth 要求某人做某事He requires to repair the roof.The roof requires repairing.The roof requires a worker to repair. 屋顶需要找工人修理了。3) require that +虚拟语气（should do）He required that I (should) go right away. 他要求我连忙走。

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