[A] Los verbos más importantes que pueden usarse de cualquiera de las dos formas son ask, beg, expect, would hate, help, intend, like (= think wise or right), would like (= enjoy), would love, mean, prefer, want, wish:
- He likes to eat well.
- He likes his staff to eat well.
- I want to ride. I want you to ride too.
[B] ask y beg
ask + infinitivo tiene un significado diferente de ask + objeto + infinitivo:
- I asked to speak to Mrs Jones = I said, «Could I speak to Mrs Jones?»
- I asked Bill to speak to her = I said, «Bill, would you speak to her?»
Con beg se da una diferencia parecida, aunque beg no suele ir seguido inmediatamente de infinitivo:
- I begged (to be allowed) to go = I said, «Please let me go.»
- I begged him to go = I said, «Please go.»
ask y beg pueden ir seguidos de that … should.
[C] expect + infinitivo y expect + objeto + infinitivo pueden tener el mismo significado:
- I expect to arrive tomorrow = I think it is likely that I will arrive tomorrow.
- I expect him to arrive tomorrow = I think it is likely that he will arrive tomorrow.
Pero muy a menudo expect + objeto + infinitivo transmite la idea de deber:
- He expects his wife to bring him breakfast in bed at weekends. (Piensa que es su deber hacerlo.)
expect puede también ir seguido de that + sujeto + verbo. Aquí no hay idea de deber.
[D] Para ejemplos de care, hate, like, love y prefer usados con infinitivos o gerundios, ver más adelante.
intend, mean, want pueden también ir seguidos de gerundios.