Use to/ Used to There is a little confusion on how to use them. One reason for the confusion is that it is sometimes used as a verb, and sometimes used as an adjective. The other reason is because it seems like the tense changes. It's really quite simple when you look at it. www.5minuteenglish.com/mar20.htm

This means to be accustomed to Used as an adjective. Use to be + used to This means to be accustomed to I can study with the TV on. I am used to it.  It means I am accustomed, adjusted, or don't mind having the TV play while I'm studying. Tim had a hard time living in Tokyo. He wasn't used to so many people.  Tim didn't have experience being with big crowds of people before.

Remember, we always use this word when talking about the past. Used as a verb.  Use to + verb  It is a regular verb and means something that happened but doesn't happen any more. It uses -ed to show past tense. But since it always means something that happened in the past, it should always use past tense. I used to go to school in Paris. (I went to school there before, but now I don't.) When Joshua was a child, he used to climb trees. (Now he doesn't climb trees.) Remember, we always use this word when talking about the past. So when do you use use to without the d at the end? When the base form of the verb is used. She didn't use to swim before noon. (Now she does swim before noon.) Did your father use to ride a horse?  (In these cases the past tense is shown with the did and didn't.)

2. Sheila wasn't ______ having to cook for herself. You try...Use the correct form of use to. Decide if it is an adjective or verb. If it is a verb, does it use the base form of the verb, or does it need -ed? 1. Emily _____ play with dolls. Emily used to play with dolls (used to – verb)                     2. Sheila wasn't ______  having to cook for herself. 3. Did Todd _______ go skiing in the Alps? 4. I never  ________ get up so late. 5. His dog is  ________ staying home alone all day. 6. We didn't ________ use to fight like this. 7. I wonder if you will ever be ________  working so hard. 8. She didn't ________ sing so well, did she? 9. Herbert ________  play basketball after school. 10. They aren't ________ staying out so late.

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The air that circulates inside a pressurized airplane cabin has very good quality. Only sentences 1, 2 and 3 are correct

Only 2 and 4 are in the text Only 1, 2 and 6 do

R. consequently - A conjunção “thus” significa “assim, desta forma”, podendo ser substituída por “consequently” sem alterar o significado da frase R:Only 1, 3 and 4 are. -As informações 1, 3 e 4 estão contidas no texto. Informação 1- os diferentes materiais com os quais eram feitas roupas, “fur-pele, leather-couro, leaves-folhas ou grass-capim” (linha 1). Informação 3- a razão das pessoas usarem roupas – “protection from the elements – proteção dos elementos” (frio, chuva, etc.) (linha 2) Informação 4- o ano que algmas agulhas de costura foram encontradas, “1988 na Rússia” (linha 4)

Only 2, 4 and 5 are in the text. As informações 2,4 e 5 estão contidas no texto. Informação 2- a razão pela qual é difícil saber sobre as primeiras roupas usadas pelos humanos “clothing materials deteriorate quickly”(linhas 2 e 3) Informação 4- O local onde os arqueólogos encontraram antigas agulhas de costura – perto de Kostenki, Rússia (linha 4) Informação 5- os diferentes modos que nossos ancestrais costumavam usar suas “garments-vestimentas”, “draped-penduradas”, “wrapped-enroladas” e “tied-amaradas”. (linhas 1 e 2) R. because - A conjunção “since – visto que, uma vez que, desde que” pode ser substituída por “because” sem alterar o significado da frase.