不定式省略to的10种情况一、使役动词与to的省略当不定式用于let, make, have等使役动词后作宾语补足语，不定式必须省略to。如：Let me have another cup of tea. 给我再来一杯茶。She had him dig away the snow. 她让他把雪挖走。They made him tell them everything. 他们强迫他把一切全告诉他们。但是，当使役动词用于被动语态时，其后的不定式则必须要带to。如：他被迫一天工作20小时。误：He was made work twenty hours a day.正：He was made to work twenty hours a day.注意，表示使役意义的let和have很少用于被动语态。另外注意，force, oblige等虽然也表示“使”，但它们后用作宾语补足语的不定式必须带to。如：They forced her to sign the paper. 他们强迫她在文件上签字。The law obliged parents to
