1.be useful to_______ 2.be helpful to______3.be important to______4.be necessary to______填doing或do
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1.be useful to_______ 2.be helpful to______3.be important to______4.be necessary to______填doing或do
1.be useful to_______ 2.be helpful to______3.be important to______4.be necessary to______
填doing或do
1.be useful to_______ 2.be helpful to______3.be important to______4.be necessary to______填doing或do
be useful to do sth
it is helpful to do sth.做……是有好处的
It is helpful for sb.to do sth.某人做……是对他有好处的
这两个都是it 做形式主语
helpful 是表示“有好处”,而不是“有助的”
it is helpful in doing sth.
sth.is helpful to sth./ doing sth.前面的sth.一般是具体的某个事物
be important to do sth ,be important for sb to do sth
be necessary to do sth
write
think
sleep
study
希望对你有帮助
It's useful \helpful \ important \necessary to do sth
在这个句型中通常是to do
希望对你有帮助,满意请采纳不对吧,我记得be helpful to doing sth在上面句型中是to do 在下面短语中可以出现doing,不过doing是动名词,不...
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It's useful \helpful \ important \necessary to do sth
在这个句型中通常是to do
希望对你有帮助,满意请采纳
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