1和 do 连用的固定搭配can/coulddosth 能够做某事may/mightdosth 可以做某事mustdosth 必须做某事need 做情态动词,后接动词原形,多用于否定句和疑问句
需要做某事shoulddosth 应该做某事oughttodosth 应该做某事hadbetterdosth 最好做某事will(would)youpleasedosth 请某人做某事whynotdosth=whydon'tyoudosth 你为什么不做某事呢makesbdosth 使某人做某事letsbdosth 让某人做某事havesbdosth 让/叫/使某人做某事helpsbdosth 帮助某人做某事wouldratherdosth 宁愿做某事wouldratherdosththandosth 宁愿而不愿prefertodosthratherthandosth 宁愿而不愿Don't+动词原形+其他不要做某事pleasedosth 请做某事will/woulddosth 将要做某事(般将来时,任何人称)shall/should 将要做某事(般将来时,第人称)2和 todo 连用的固定搭配asksb(not)todosth要求某人(不要)做某事bepleasedtodosth很高兴做某事begladtodosth=behappytodosth 很高兴做某事decidetodosth决定做某事makeadecisiontodosth决定做某事havenothingtodo无所事事havesomethingtodowith与有关havenothingtodowith与无关encouragesbtodosth鼓励某人做某事It's+形容词+forsb+todosth 对某人来说做某事是…的Itis+形容词/名词+todosth做某事疋…的findit+形容