Pres-pres Perf Subj_doubt

The Present Tense and the Present Perfect of the Subjunctive with Expressions of Doubt Page 306 – Chapter 7 Realidades 3

Subjunctive with Doubt ➲ To

express doubt, uncertainty, or disbelief about actions in the present, you use the present subjunctive. ➲ To express doubt, uncertainty, or disbelief about actions in the past, you use the present perfect subjunctive.

Doubt and Uncertainty ➲ Remember,

the present perfect subjunctive is formed with the present subjunctive of HABER + a past participle. ➲ Dudo que existan los extraterrestres. ➲ Es posible que Es dudoso que

Disbelief ➲ No

creo que hayan existido los extraterrestres. ➲ Es imposible que…

Expressions of Certainty ➲ Expressions

of belief, knowledge or certainty are usually followed by the indicative. ➲ Creo que ésas son ruinas mayas. ➲ Estoy segura que… ➲ Es evidente que… ➲ Es verdad que… ➲ Sabemos que… ➲ No dudo que…